unrecognised task serialised by server; missing registration?16444

The game closed when passing the map, now when entering the character "Podorva" DofH league the game closes with the error "unrecognised task serialised by server; missing registration? 16444"
Restarting the client, changing to another character, changing the server does not help!
Checking the integrity of Steam files also helped.
https://iimg.su/i/t1GBdn