Error handling in loadChannelOptions func

apps/static/js/home/subscriptions.js

@@ -283,13 +283,28 @@ async function loadChannelOptions(guildId) {
 
     try {
         const channels = await loadChannels(guildId);
-        // alert(JSON.stringify(channels, null, 4));
+        console.log(JSON.stringify(channels));
+
+        if (channels.message && channels.message.includes("rate limit")) {
+            throw new Error(
+                `${channels.message} Retry after ${channels.retry_after} seconds.`
+            )
+        }
+
+        if (channels.code === 50001) {
+            throw new Error(
+                `Unable to retrieve channels from Guild '${guildId}'.
+                Ensure that @PYRSS is a member with permissions
+                to view channels.`
+            );
+        }
+
         channels.forEach(channel => {
             if (channel.type !== 0)
                 return;
 
             $("#subChannels").append($("<option>", {
-                text: channel.name,
+                text: "#" + channel.name,
                 value: channel.id
             }));
         });