Mate Settings Crash

I get a Crash report that includes this:
/usr/bin/mate-settings-deamon
mate settings deamon 2.22.1-0ubuntu1
Ubuntu-Mate 19.10
mate-settings-deamon crashed with SIGABRT in g_assertion_message_expr()

Can someone explain the why and what to do ?

Again today. Don't know what to do, except restart.