On my second RPi "Piggy" (with only simulator mount and Sony a5000) I did:
sudo apt purge kstars-bleeding indi-full
sudo apt autoremove
reboot
sudo apt install kstars-bleeding indi-full
I got exactly same result. Crashed INDI-Ekos-Kstars after some subs.
This Stellarmate is my original, gradually updated during a long time. It worked perfect before last update!