Ranked match: Cardinal has stoped working

During a ranked 1v1, after literally killing my opponent I get an error: Cardinal has stopped working

My internet connection was Ok, but after logging in again I got a free loss :frowning:

It happened to me 2nd time, every time a lost match and almost dead opponent.

Is this could be some disc hack or sth?

Seems like the ageup-bug, which started happened frequently in season5.
In the moment someone reaches castle-age, there is a significant chance for instant crash.