diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 76ebf8a..7302e2f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -124,9 +124,7 @@ export default {
     const filename = getFilename(__filename);
     return new SlashCommandBuilder()
       .setName(filename.toLowerCase())
-      .setDescription(
-        client.locales.get(client.config.default_lang)?.get(`c_${filename}_desc`) ?? ""
-      )
+      .setDescription(client.locales.get(client.config.default_lang)!.get(`c_${filename}_desc`)!)
       .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
       .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`));
   },
diff --git a/src/buttons/music/queueList-next.ts b/src/buttons/music/queueList-next.ts
index a478175..a160587 100644
--- a/src/buttons/music/queueList-next.ts
+++ b/src/buttons/music/queueList-next.ts
@@ -31,7 +31,7 @@ export default {
     }
 
     // Get queue
-    const queue = useQueue(interaction.guildId ?? "");
+    const queue = useQueue(interaction.guildId!);
 
     const embed = new EmbedBuilder();
     const rows = [];
diff --git a/src/buttons/music/queueList-prec.ts b/src/buttons/music/queueList-prec.ts
index 4005788..3260334 100644
--- a/src/buttons/music/queueList-prec.ts
+++ b/src/buttons/music/queueList-prec.ts
@@ -31,7 +31,7 @@ export default {
     }
 
     // Get queue
-    const queue = useQueue(interaction.guildId ?? "");
+    const queue = useQueue(interaction.guildId!);
 
     const embed = new EmbedBuilder();
     const rows = [];
diff --git a/src/commands/loader.ts b/src/commands/loader.ts
index 747a418..d6b3e39 100644
--- a/src/commands/loader.ts
+++ b/src/commands/loader.ts
@@ -6,7 +6,7 @@ import { removeExtension } from "../utils/misc";
 
 /** Load all the commands */
 export default async (client: Client) => {
-  const rest = new REST({ version: "10" }).setToken(client.token ?? "");
+  const rest = new REST({ version: "10" }).setToken(client.token!);
 
   const command_categories = (await readdir(__dirname)).filter(
     (element) => !element.endsWith(".js") && !element.endsWith(".ts"),
diff --git a/src/commands/misc/archive.ts b/src/commands/misc/archive.ts
index 8f8053f..2fa4bdf 100644
--- a/src/commands/misc/archive.ts
+++ b/src/commands/misc/archive.ts
@@ -19,9 +19,7 @@ export default {
     return (
       new SlashCommandBuilder()
         .setName(filename.toLowerCase())
-        .setDescription(
-          client.locales.get(client.config.default_lang)?.get(`c_${filename}_desc`) ?? "",
-        )
+        .setDescription(client.locales.get(client.config.default_lang)!.get(`c_${filename}_desc`)!)
         .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
         .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`))
 
@@ -29,10 +27,10 @@ export default {
         .addStringOption((option) =>
           option
             .setName(
-              client.locales.get(client.config.default_lang)?.get(`c_${filename}_opt1_name`) ?? "",
+              client.locales.get(client.config.default_lang)!.get(`c_${filename}_opt1_name`)!,
             )
             .setDescription(
-              client.locales.get(client.config.default_lang)?.get(`c_${filename}_opt1_desc`) ?? "",
+              client.locales.get(client.config.default_lang)!.get(`c_${filename}_opt1_desc`)!,
             )
             .setNameLocalizations(getLocalizations(client, `c_${filename}_opt1_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_opt1_desc`)),
@@ -44,8 +42,8 @@ export default {
     const loc = getLocale(client, interaction.locale);
     const desiredCat = interaction.options.get(
       client.locales
-        .get(client.config.default_lang)
-        ?.get(`c_${getFilename(__filename)}_opt1_name`) ?? "",
+        .get(client.config.default_lang)!
+        .get(`c_${getFilename(__filename)}_opt1_name`)!,
     )?.value as string;
 
     // If a category isn't specified
diff --git a/src/commands/misc/help.ts b/src/commands/misc/help.ts
index 48a455c..bd1238b 100644
--- a/src/commands/misc/help.ts
+++ b/src/commands/misc/help.ts
@@ -13,9 +13,7 @@ export default {
     return (
       new SlashCommandBuilder()
         .setName(filename.toLowerCase())
-        .setDescription(
-          client.locales.get(client.config.default_lang)?.get(`c_${filename}_desc`) ?? "",
-        )
+        .setDescription(client.locales.get(client.config.default_lang)!.get(`c_${filename}_desc`)!)
         .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
         .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`))
 
@@ -23,10 +21,10 @@ export default {
         .addStringOption((option) =>
           option
             .setName(
-              client.locales.get(client.config.default_lang)?.get(`c_${filename}_opt1_name`) ?? "",
+              client.locales.get(client.config.default_lang)!.get(`c_${filename}_opt1_name`)!,
             )
             .setDescription(
-              client.locales.get(client.config.default_lang)?.get(`c_${filename}_opt1_desc`) ?? "",
+              client.locales.get(client.config.default_lang)!.get(`c_${filename}_opt1_desc`)!,
             )
             .setNameLocalizations(getLocalizations(client, `c_${filename}_opt1_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_opt1_desc`)),
@@ -38,8 +36,8 @@ export default {
     const loc = getLocale(client, interaction.locale);
     const desired_command = interaction.options.getString(
       client.locales
-        .get(client.config.default_lang)
-        ?.get(`c_${getFilename(__filename)}_opt1_name`) ?? "",
+        .get(client.config.default_lang)!
+        .get(`c_${getFilename(__filename)}_opt1_name`)!,
     );
 
     // If a command isn't specified
diff --git a/src/commands/misc/ping.ts b/src/commands/misc/ping.ts
index 0d80bc8..b2c98c0 100644
--- a/src/commands/misc/ping.ts
+++ b/src/commands/misc/ping.ts
@@ -10,9 +10,7 @@ export default {
     const filename = getFilename(__filename);
     return new SlashCommandBuilder()
       .setName(filename.toLowerCase())
-      .setDescription(
-        client.locales.get(client.config.default_lang)?.get(`c_${filename}_desc`) ?? "",
-      )
+      .setDescription(client.locales.get(client.config.default_lang)!.get(`c_${filename}_desc`)!)
       .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
       .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`));
   },
diff --git a/src/commands/misc/prep.ts b/src/commands/misc/prep.ts
index eeffddf..fa4ab30 100644
--- a/src/commands/misc/prep.ts
+++ b/src/commands/misc/prep.ts
@@ -12,9 +12,7 @@ export default {
     return (
       new SlashCommandBuilder()
         .setName(filename.toLowerCase())
-        .setDescription(
-          client.locales.get(client.config.default_lang)?.get(`c_${filename}_desc`) ?? "",
-        )
+        .setDescription(client.locales.get(client.config.default_lang)!.get(`c_${filename}_desc`)!)
         .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
         .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`))
 
@@ -22,10 +20,10 @@ export default {
         .addStringOption((option) =>
           option
             .setName(
-              client.locales.get(client.config.default_lang)?.get(`c_${filename}_opt1_name`) ?? "",
+              client.locales.get(client.config.default_lang)!.get(`c_${filename}_opt1_name`)!,
             )
             .setDescription(
-              client.locales.get(client.config.default_lang)?.get(`c_${filename}_opt1_desc`) ?? "",
+              client.locales.get(client.config.default_lang)!.get(`c_${filename}_opt1_desc`)!,
             )
             .setNameLocalizations(getLocalizations(client, `c_${filename}_opt1_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_opt1_desc`)),
@@ -37,8 +35,8 @@ export default {
     const loc = getLocale(client, interaction.locale);
     const desired_cat = interaction.options.get(
       client.locales
-        .get(client.config.default_lang)
-        ?.get(`c_${getFilename(__filename)}_opt1_name`) ?? "",
+        .get(client.config.default_lang)!
+        .get(`c_${getFilename(__filename)}_opt1_name`)!,
     )?.value as string;
 
     // If a category isn't specified
diff --git a/src/commands/misc/reminder.ts b/src/commands/misc/reminder.ts
index 2d8ca3b..3138a34 100644
--- a/src/commands/misc/reminder.ts
+++ b/src/commands/misc/reminder.ts
@@ -35,23 +35,23 @@ export default {
       new SlashCommandBuilder()
         // Command
         .setName(filename.toLowerCase())
-        .setDescription(loc_default.get(`c_${filename}_desc`) ?? "")
+        .setDescription(loc_default.get(`c_${filename}_desc`)!)
         .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
         .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`))
 
         // New reminder
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub1_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub1_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub1_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub1_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub1_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub1_desc`))
 
             // Specified Time
             .addStringOption((option) =>
               option
-                .setName(loc_default.get(`c_${filename}_sub1_opt1_name`)?.toLowerCase() ?? "")
-                .setDescription(loc_default.get(`c_${filename}_sub1_opt1_desc`) ?? "")
+                .setName(loc_default.get(`c_${filename}_sub1_opt1_name`)!.toLowerCase())
+                .setDescription(loc_default.get(`c_${filename}_sub1_opt1_desc`)!)
                 .setNameLocalizations(
                   getLocalizations(client, `c_${filename}_sub1_opt1_name`, true),
                 )
@@ -63,8 +63,8 @@ export default {
             // Specified message (not required)
             .addStringOption((option) =>
               option
-                .setName(loc_default.get(`c_${filename}_sub1_opt2_name`)?.toLowerCase() ?? "")
-                .setDescription(loc_default.get(`c_${filename}_sub1_opt2_desc`) ?? "")
+                .setName(loc_default.get(`c_${filename}_sub1_opt2_name`)!.toLowerCase())
+                .setDescription(loc_default.get(`c_${filename}_sub1_opt2_desc`)!)
                 .setNameLocalizations(
                   getLocalizations(client, `c_${filename}_sub1_opt2_name`, true),
                 )
@@ -77,16 +77,16 @@ export default {
         // List reminders
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub2_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub2_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub2_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub2_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub2_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub2_desc`))
 
             // User
             .addUserOption((option) =>
               option
-                .setName(loc_default.get(`c_${filename}_sub2_opt1_name`)?.toLowerCase() ?? "")
-                .setDescription(loc_default.get(`c_${filename}_sub2_opt1_desc`) ?? "")
+                .setName(loc_default.get(`c_${filename}_sub2_opt1_name`)!.toLowerCase())
+                .setDescription(loc_default.get(`c_${filename}_sub2_opt1_desc`)!)
                 .setNameLocalizations(
                   getLocalizations(client, `c_${filename}_sub2_opt1_name`, true),
                 )
@@ -98,8 +98,8 @@ export default {
             // Page
             .addIntegerOption((option) =>
               option
-                .setName(loc_default.get(`c_${filename}_sub2_opt2_name`)?.toLowerCase() ?? "")
-                .setDescription(loc_default.get(`c_${filename}_sub2_opt2_desc`) ?? "")
+                .setName(loc_default.get(`c_${filename}_sub2_opt2_name`)!.toLowerCase())
+                .setDescription(loc_default.get(`c_${filename}_sub2_opt2_desc`)!)
                 .setNameLocalizations(
                   getLocalizations(client, `c_${filename}_sub2_opt2_name`, true),
                 )
@@ -112,16 +112,16 @@ export default {
         // Delete a reminder
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub3_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub3_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub3_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub3_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub3_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub3_desc`))
 
             // ID
             .addIntegerOption((option) =>
               option
-                .setName(loc_default.get(`c_${filename}_sub3_opt1_name`)?.toLowerCase() ?? "")
-                .setDescription(loc_default.get(`c_${filename}_sub3_opt1_desc`) ?? "")
+                .setName(loc_default.get(`c_${filename}_sub3_opt1_name`)!.toLowerCase())
+                .setDescription(loc_default.get(`c_${filename}_sub3_opt1_desc`)!)
                 .setNameLocalizations(
                   getLocalizations(client, `c_${filename}_sub3_opt1_name`, true),
                 )
@@ -142,7 +142,7 @@ export default {
     const subcommand = interaction.options.getSubcommand();
     switch (subcommand) {
       // New reminder
-      case loc_default?.get(`c_${filename}_sub1_name`)?.toLowerCase() ?? "": {
+      case loc_default?.get(`c_${filename}_sub1_name`)?.toLowerCase(): {
         // If time is already renseigned
         const time = interaction.options.getString(
           loc_default?.get(`c_${filename}_sub1_opt1_name`) as string,
@@ -193,7 +193,7 @@ export default {
         }
       }
       // List reminders
-      case loc_default?.get(`c_${filename}_sub2_name`)?.toLowerCase() ?? "": {
+      case loc_default?.get(`c_${filename}_sub2_name`)?.toLowerCase(): {
         // Which user to show
         let user = interaction.options.getUser(
           loc_default?.get(`c_${filename}_sub2_opt1_name`) as string,
@@ -244,7 +244,7 @@ export default {
         return;
       }
       // Delete a reminder
-      case loc_default?.get(`c_${filename}_sub3_name`)?.toLowerCase() ?? "": {
+      case loc_default?.get(`c_${filename}_sub3_name`)?.toLowerCase(): {
         const id = interaction.options.getInteger(
           loc_default?.get(`c_${filename}_sub3_opt1_name`) as string,
         );
diff --git a/src/commands/music/lyrics.ts b/src/commands/music/lyrics.ts
index 9369481..3b7dcfb 100644
--- a/src/commands/music/lyrics.ts
+++ b/src/commands/music/lyrics.ts
@@ -17,23 +17,23 @@ export default {
     return (
       new SlashCommandBuilder()
         .setName(filename.toLowerCase())
-        .setDescription(loc_default.get(`c_${filename}_desc`) ?? "")
+        .setDescription(loc_default.get(`c_${filename}_desc`)!)
         .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
         .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`))
 
         // Normal
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub1_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub1_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub1_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub1_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub1_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub1_desc`))
 
             // Command option
             .addStringOption((option) =>
               option
-                .setName(loc_default.get(`c_${filename}_opt1_name`)?.toLowerCase() ?? "")
-                .setDescription(loc_default.get(`c_${filename}_opt1_desc`) ?? "")
+                .setName(loc_default.get(`c_${filename}_opt1_name`)!.toLowerCase())
+                .setDescription(loc_default.get(`c_${filename}_opt1_desc`)!)
                 .setNameLocalizations(getLocalizations(client, `c_${filename}_opt1_name`, true))
                 .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_opt1_desc`)),
             ),
@@ -42,16 +42,16 @@ export default {
         // Romanized
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub2_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub2_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub2_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub2_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub2_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub2_desc`))
 
             // Command option
             .addStringOption((option) =>
               option
-                .setName(loc_default.get(`c_${filename}_opt1_name`)?.toLowerCase() ?? "")
-                .setDescription(loc_default.get(`c_${filename}_opt1_desc`) ?? "")
+                .setName(loc_default.get(`c_${filename}_opt1_name`)!.toLowerCase())
+                .setDescription(loc_default.get(`c_${filename}_opt1_desc`)!)
                 .setNameLocalizations(getLocalizations(client, `c_${filename}_opt1_name`, true))
                 .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_opt1_desc`)),
             ),
@@ -60,8 +60,8 @@ export default {
         // Synced
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub3_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub3_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub3_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub3_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub3_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub3_desc`)),
         )
@@ -82,12 +82,11 @@ export default {
     await interaction.deferReply();
 
     const player = useMainPlayer() as Player;
-    const queue = useQueue(interaction.guildId ?? "");
+    const queue = useQueue(interaction.guildId!);
     if (request) {
       if (
         interaction.options.getSubcommand() ==
-          loc_default?.get(`c_${filename}_sub2_name`)?.toLowerCase() ??
-        ""
+        loc_default?.get(`c_${filename}_sub2_name`)?.toLowerCase()
       ) {
         // Romanized
         request += " romanized";
@@ -113,8 +112,7 @@ export default {
 
     if (
       interaction.options.getSubcommand() ==
-        loc_default?.get(`c_${filename}_sub3_name`)?.toLowerCase() ??
-      ""
+      loc_default?.get(`c_${filename}_sub3_name`)?.toLowerCase()
     ) {
       if (queue === null) {
         return await interaction.followUp(`❌ | ${loc.get("c_lyrics1")}`);
diff --git a/src/commands/music/pause.ts b/src/commands/music/pause.ts
index 2f8dc3d..2e60bf6 100644
--- a/src/commands/music/pause.ts
+++ b/src/commands/music/pause.ts
@@ -16,14 +16,14 @@ export default {
 
     return new SlashCommandBuilder()
       .setName(filename.toLowerCase())
-      .setDescription(loc_default.get(`c_${filename}_desc`) ?? "")
+      .setDescription(loc_default.get(`c_${filename}_desc`)!)
       .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
       .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`));
   },
 
   interaction: async (interaction: ChatInputCommandInteraction, client: Client) => {
     const loc = getLocale(client, interaction.locale);
-    const queue = useQueue(interaction.guildId ?? "");
+    const queue = useQueue(interaction.guildId!);
 
     if (queue) {
       const embed = new EmbedBuilder();
diff --git a/src/commands/music/play.ts b/src/commands/music/play.ts
index 807c938..bda4646 100644
--- a/src/commands/music/play.ts
+++ b/src/commands/music/play.ts
@@ -25,15 +25,15 @@ export default {
     return (
       new SlashCommandBuilder()
         .setName(filename.toLowerCase())
-        .setDescription(loc_default.get(`c_${filename}_desc`) ?? "")
+        .setDescription(loc_default.get(`c_${filename}_desc`)!)
         .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
         .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`))
 
         // Command option
         .addStringOption((option) =>
           option
-            .setName(loc_default.get(`c_${filename}_opt1_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_opt1_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_opt1_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_opt1_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_opt1_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_opt1_desc`))
             .setAutocomplete(true),
@@ -47,8 +47,8 @@ export default {
     const filename = getFilename(__filename);
 
     const member = client.guilds.cache
-      .get(interaction.guildId ?? "")
-      ?.members.cache.get(interaction.member?.user.id ?? "");
+      .get(interaction.guildId!)
+      ?.members.cache.get(interaction.member!.user.id);
 
     if (!member?.voice.channelId) {
       return await interaction.reply({
@@ -75,7 +75,7 @@ export default {
     if (!query) {
       // Now playing
 
-      const queue = useQueue(interaction.guildId ?? "");
+      const queue = useQueue(interaction.guildId!);
 
       if (queue) {
         const track = queue.history.currentTrack;
diff --git a/src/commands/music/queue.ts b/src/commands/music/queue.ts
index ec6f6a6..2ba005e 100644
--- a/src/commands/music/queue.ts
+++ b/src/commands/music/queue.ts
@@ -27,23 +27,23 @@ export default {
     return (
       new SlashCommandBuilder()
         .setName(filename.toLowerCase())
-        .setDescription(loc_default.get(`c_${filename}_desc`) ?? "")
+        .setDescription(loc_default.get(`c_${filename}_desc`)!)
         .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
         .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`))
 
         // Show the queue
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub1_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub1_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub1_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub1_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub1_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub1_desc`))
 
             // Specified Page
             .addNumberOption((option) =>
               option
-                .setName(loc_default.get(`c_${filename}_sub1_opt1_name`)?.toLowerCase() ?? "")
-                .setDescription(loc_default.get(`c_${filename}_sub1_opt1_desc`) ?? "")
+                .setName(loc_default.get(`c_${filename}_sub1_opt1_name`)!.toLowerCase())
+                .setDescription(loc_default.get(`c_${filename}_sub1_opt1_desc`)!)
                 .setNameLocalizations(
                   getLocalizations(client, `c_${filename}_sub1_opt1_name`, true),
                 )
@@ -56,8 +56,8 @@ export default {
         // Shuffle Queue
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub2_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub2_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub2_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub2_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub2_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub2_desc`)),
         )
@@ -65,8 +65,8 @@ export default {
         // Remove <ID>
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub3_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub3_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub3_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub3_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub3_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub3_desc`))
 
@@ -74,8 +74,8 @@ export default {
             // TODO?: ID range -> as a string: 5-8 remove 5, 6, 7, 8
             .addNumberOption((option) =>
               option
-                .setName(loc_default.get(`c_${filename}_sub3_opt1_name`)?.toLowerCase() ?? "")
-                .setDescription(loc_default.get(`c_${filename}_sub3_opt1_desc`) ?? "")
+                .setName(loc_default.get(`c_${filename}_sub3_opt1_name`)!.toLowerCase())
+                .setDescription(loc_default.get(`c_${filename}_sub3_opt1_desc`)!)
                 .setNameLocalizations(
                   getLocalizations(client, `c_${filename}_sub3_opt1_name`, true),
                 )
@@ -93,7 +93,7 @@ export default {
     const filename = getFilename(__filename);
 
     const loc = getLocale(client, interaction.locale);
-    const queue = useQueue(interaction.guildId ?? "");
+    const queue = useQueue(interaction.guildId!);
 
     const embed = new EmbedBuilder();
 
@@ -101,7 +101,7 @@ export default {
       const subcommand = interaction.options.getSubcommand();
       switch (subcommand) {
         // Show the queue
-        case loc_default?.get(`c_${filename}_sub1_name`)?.toLowerCase() ?? "": {
+        case loc_default?.get(`c_${filename}_sub1_name`)?.toLowerCase(): {
           const page =
             interaction.options.getNumber(
               loc_default?.get(`c_${filename}_sub1_opt1_name`) as string,
@@ -142,7 +142,7 @@ export default {
         }
 
         // Shuffle Queue
-        case loc_default?.get(`c_${filename}_sub2_name`)?.toLowerCase() ?? "": {
+        case loc_default?.get(`c_${filename}_sub2_name`)?.toLowerCase(): {
           queue.tracks.shuffle();
 
           embed.setDescription(loc.get("c_queue3"));
@@ -150,7 +150,7 @@ export default {
         }
 
         // Remove <ID>
-        case loc_default?.get(`c_${filename}_sub3_name`)?.toLowerCase() ?? "": {
+        case loc_default?.get(`c_${filename}_sub3_name`)?.toLowerCase(): {
           const id = interaction.options.getNumber(
             loc_default?.get(`c_${filename}_sub3_opt1_name`) as string,
           ) as number;
diff --git a/src/commands/music/repeat.ts b/src/commands/music/repeat.ts
index 08d376b..3b131fe 100644
--- a/src/commands/music/repeat.ts
+++ b/src/commands/music/repeat.ts
@@ -17,15 +17,15 @@ export default {
     return (
       new SlashCommandBuilder()
         .setName(filename.toLowerCase())
-        .setDescription(loc_default.get(`c_${filename}_desc`) ?? "")
+        .setDescription(loc_default.get(`c_${filename}_desc`)!)
         .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
         .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`))
 
         // Disable repeat
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub1_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub1_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub1_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub1_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub1_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub1_desc`)),
         )
@@ -33,8 +33,8 @@ export default {
         // Repeat current track
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub2_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub2_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub2_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub2_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub2_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub2_desc`)),
         )
@@ -42,8 +42,8 @@ export default {
         // Repeat queue
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub3_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub3_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub3_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub3_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub3_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub3_desc`)),
         )
@@ -51,8 +51,8 @@ export default {
         // Enable autoplay
         .addSubcommand((subcommand) =>
           subcommand
-            .setName(loc_default.get(`c_${filename}_sub4_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_sub4_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_sub4_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_sub4_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_sub4_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_sub4_desc`)),
         )
@@ -64,31 +64,31 @@ export default {
     const filename = getFilename(__filename);
 
     const loc = getLocale(client, interaction.locale);
-    const queue = useQueue(interaction.guildId ?? "");
+    const queue = useQueue(interaction.guildId!);
 
     if (queue) {
       const subcommand = interaction.options.getSubcommand();
       switch (subcommand) {
         // Disable
-        case loc_default?.get(`c_${filename}_sub1_name`)?.toLowerCase() ?? "": {
+        case loc_default?.get(`c_${filename}_sub1_name`)?.toLowerCase(): {
           queue.setRepeatMode(QueueRepeatMode.OFF);
           return interaction.reply(loc.get("c_repeat2") + ".");
         }
 
         // Queue Repeat
-        case loc_default?.get(`c_${filename}_sub3_name`)?.toLowerCase() ?? "": {
+        case loc_default?.get(`c_${filename}_sub3_name`)?.toLowerCase(): {
           queue.setRepeatMode(QueueRepeatMode.QUEUE);
           return interaction.reply(`${loc.get("c_repeat3")} ${loc.get("c_repeat6")}.`);
         }
 
         // Autoplay
-        case loc_default?.get(`c_${filename}_sub4_name`)?.toLowerCase() ?? "": {
+        case loc_default?.get(`c_${filename}_sub4_name`)?.toLowerCase(): {
           queue.setRepeatMode(QueueRepeatMode.AUTOPLAY);
           return interaction.reply(`${loc.get("c_repeat4")} ${loc.get("c_repeat6")}.`);
         }
 
         // Track repeat
-        case loc_default?.get(`c_${filename}_sub2_name`)?.toLowerCase() ?? "": {
+        case loc_default?.get(`c_${filename}_sub2_name`)?.toLowerCase(): {
           queue.setRepeatMode(QueueRepeatMode.TRACK);
           return interaction.reply(
             `${loc.get("c_repeat5")} ${queue.history.currentTrack?.title} ${loc.get("c_repeat6")}.`,
diff --git a/src/commands/music/skip.ts b/src/commands/music/skip.ts
index d17038d..b16da2e 100644
--- a/src/commands/music/skip.ts
+++ b/src/commands/music/skip.ts
@@ -17,15 +17,15 @@ export default {
     return (
       new SlashCommandBuilder()
         .setName(filename.toLowerCase())
-        .setDescription(loc_default.get(`c_${filename}_desc`) ?? "")
+        .setDescription(loc_default.get(`c_${filename}_desc`)!)
         .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
         .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`))
 
         // Command option
         .addNumberOption((option) =>
           option
-            .setName(loc_default.get(`c_${filename}_opt1_name`)?.toLowerCase() ?? "")
-            .setDescription(loc_default.get(`c_${filename}_opt1_desc`) ?? "")
+            .setName(loc_default.get(`c_${filename}_opt1_name`)!.toLowerCase())
+            .setDescription(loc_default.get(`c_${filename}_opt1_desc`)!)
             .setNameLocalizations(getLocalizations(client, `c_${filename}_opt1_name`, true))
             .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_opt1_desc`)),
         )
@@ -37,7 +37,7 @@ export default {
     const filename = getFilename(__filename);
 
     const loc = getLocale(client, interaction.locale);
-    const queue = useQueue(interaction.guildId ?? "");
+    const queue = useQueue(interaction.guildId!);
 
     const id = interaction.options.getNumber(loc_default?.get(`c_${filename}_opt1_name`) as string);
 
diff --git a/src/commands/music/stop.ts b/src/commands/music/stop.ts
index 6a58220..eed0062 100644
--- a/src/commands/music/stop.ts
+++ b/src/commands/music/stop.ts
@@ -17,7 +17,7 @@ export default {
 
     return new SlashCommandBuilder()
       .setName(filename.toLowerCase())
-      .setDescription(loc_default.get(`c_${filename}_desc`) ?? "")
+      .setDescription(loc_default.get(`c_${filename}_desc`)!)
       .setNameLocalizations(getLocalizations(client, `c_${filename}_name`, true))
       .setDescriptionLocalizations(getLocalizations(client, `c_${filename}_desc`));
   },
diff --git a/src/utils/reminder.ts b/src/utils/reminder.ts
index 58b7f3d..1d065bf 100644
--- a/src/utils/reminder.ts
+++ b/src/utils/reminder.ts
@@ -168,7 +168,7 @@ export const sendReminder = (client: Client, info: infoReminder, option: OptionR
     }
   } else {
     // Channel
-    client.channels.fetch(info.channelId ?? "").then((channel) => {
+    client.channels.fetch(info.channelId!).then((channel) => {
       if (channel?.isSendable()) {
         let content = `<@${info.userId}>`;
         embed.setFooter({