I logged into the game, hit the practice game button and when it pulled up the list for open games I hit the refresh button and this came up, I kept on hitting it and it'll inconsistently come up.
Having the same issue :P Whenever I join a game a small window pops up "Unexpected error", I just close it and nothing bad happens.
Also every time a new player joins the game, the same window pops up, I close it, nothing happens.
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