The game seems to be broken since the recent battle pass update. After locking in all heroes on the hero selection screen, the dota 2 client crashes for all players with the following error message:
panorama::RequiredCallFailed(); Unable to load layout file '(null)'. The addon you're running may reference a non existing file.

Love the game! Thanks to the developers supporting and developing this mod! Will be looking forward to a fix for this issue.