debug auth

bot.js

@@ -230,7 +230,7 @@ async function loadJson(url, auth) {
     if (auth) {
         response = await fetch(url, auth);
         sendToBotTestingChannel('imgur url:' + url);
-        sendToBotTestingChannel('imgur auth:' + auth);
+        sendToBotTestingChannel('imgur auth:' + auth.toString());
     } else {
         response = await fetch(url);
     }