[rfc2822: I have split this topic from the other one because it’s another problem]
Now it happened again - on my wife’s mobile
What I tested this time additionally (to creating and changing entries on both sides) is creating new calendars on both sides (in DAVx5 and nextcloud). I could always see them on the other side after sync but not in calendar apps on Android.
I then activated log and after sync I found following in log:
2021-03-13 16:34:23 53815 [syncadapter.CalendarsSyncAdapterService] Couldn't sync calendars
EXCEPTION java.lang.UnsupportedOperationException: Cannot delete color aquamarine. Referenced by 11 events.
Seems we used CoD (Color of Death ). After switching event color option on, sync worked again.
How can I solve it? I switched event color option off because I don’t want to see my wife’s calendar entries in different colors on my device. I could not get it working with just switching the option off on my mobile, some entries got colors differing from calendar color there. So I had the idea to switch it of on my wife’s one so the colors would nether “leave” her mobile.
I think last time issue was that after syncing on of these entries to my phone, sync stopped working there.
By the way: we are using “Business Calendar”