fix: error if failed to fetch duration from url

command.py

@@ -97,7 +97,6 @@ song_shortlist = []
 def cmd_joinme(bot, user, text, command, parameter):
     global log
 
-    print(bot.mumble.users[text.actor]['channel_id'])
     bot.mumble.users.myself.move_in(
         bot.mumble.users[text.actor]['channel_id'], token=parameter)
 

media/url.py

@@ -130,6 +130,8 @@ class URLItem(BaseItem):
                     return True
                 except youtube_dl.utils.DownloadError:
                     pass
+                except KeyError: # info has no 'duration'
+                    break
 
         if not succeed:
             self.ready = 'failed'