Yes got the same error during the game in the morning, before you fixed it and sometimes during the day, especially before i posted it here.
If you're getting 404 error during game (the number in brackets in the error message), then it has to be one of the following things:
- server was taken down, possibly for restart,
- game you're trying to access no longer exists, which can happen only if the game was finished at least 10 minutes earlier,
- for some reason your browser is unable to connect to the server (proxy problems?) and something in the middle (proxy?) sends 404 instead of a proper response for this case.
If this problem persists, try to close all browser windows and login to the game again (main page of the game). If you will not be redirected to your game after entering Game Hall, then it means your game was already finished. If you will be redirected, you should be able to continue your game.
One more thing. What browser are you using?