I posted this error in game support Unhandled Exception error and it was suggested this could be because of a corrupt save file from the last player before the error occured. So we could revert one or two rounds and hope that solves the error. But I guess the motivation of everyone to do that is not very high. I really don’t like to do that, but I also vote to concede to @petrojbl1. But I also would try reverting a turn is someone wants to.