music: attempt to fix random errors with sc playlists

src/modules/music.js

@@ -84,9 +84,16 @@ async function processPlaylist(
     const clientId = await getSoundcloudClientID();
 
     if (url.indexOf("/likes") > -1) {
-      const userInfo = await fetch(
+      let userInfo = await fetch(
         `https://api-v2.soundcloud.com/resolve?url=${url}&client_id=${clientId}&limit=500`
       ).then((res) => res.json());
+
+      while (!userInfo.uri) {
+        userInfo = await fetch(
+          `https://api-v2.soundcloud.com/resolve?url=${url}&client_id=${clientId}&limit=500`
+        ).then((res) => res.json());
+      }
+
       const likesUrl =
         userInfo.uri.replace("api.", "api-v2.") +
         "/likes?limit=500&client_id=" +
@@ -171,6 +178,8 @@ async function enqueue(
   addedBy,
   suppress = false
 ) {
+  if (!url) return;
+
   const connection =
     voiceStorage.get(guild_id) ??
     (await createVoiceConnection(guild_id, voice_id, text_id));
@@ -205,7 +214,8 @@ async function enqueue(
       highWaterMark: 1 << 25,
     });
   } else if (type == "sc") {
-    url = url.replace(/^sc:/, "https://soundcloud.com/");
+    if (url.startsWith("sc:"))
+      url = url.replace(/^sc:/, "https://soundcloud.com/");
     const client_id = await getSoundcloudClientID();
 
     const info = await fetch(