Update: I just redid the OS-update and now everything works fine. I guess there was some disturbance due to my attempts of restoring backup-data.
Attempt to invoke virtual method 'void java.util.Calendar.setTimeZone(java.util.Time.Zone)' on a null object reference
I get this error when I add a standard iCal calendar. I’m not sure why this is happening.
Android 8.0.0, I guess? Probably the same as in DAVx⁵:
Does the workaround mentioned there help?
@rfc2822 I found out that I just had to update Davx5.
@catsdgs Thanks for the update. If you find a way how to reproduce the problem, please let us know.