Fixed a lot of compiler warnings. Fixed 7tv connection.

Seven/SevenApiClient.cs

@@ -23,10 +23,17 @@ public class SevenApiClient
         });
     }
 
-    public async Task<EmoteSet?> FetchChannelEmoteSet(string twitchId)
+    public async Task<EmoteSet?> FetchChannelEmoteSet(long twitchId)
     {
+        if (twitchId <= 0)
+        {
+            _logger.Warning("No valid Twitch Id was given for 7tv emotes.");
+            return null;
+        }
+
         try
         {
+            _logger.Debug($"Fetching 7tv information using Twitch Id [twitch id: {twitchId}]");
             var details = await _web.GetJson<UserDetails>($"{API_URL}/users/twitch/" + twitchId);
             return details?.EmoteSet;
         }