Can't start custom games.

I can't start custom games. I click start game and nothing happend. I was solo in lobby and tried all 3 maps, none would start when i clicked start game. I even tried add bots still did not work.

I got a new skin from rerolling 3 skins (Lumberjack Sion) so wanted to try in custom game how it looked and that how i noticed this bug.