@rfc2822: It should be fixed in the latest version of this task but it affects a lot of completed, repeating tasks running for more than a year.
Yes logging a warning or something similar and continuing with the sync would be appreciated.
DavDroid sync interval
How often can DavDroid sync without severly impacting battery life? I ask because caldav on my iphone syncs very quickly (within 1 minute) but yet the default sync interval for caldav-sync is 6 hours.
Oh I think I see. It looks like with Android 7.1 the min sync interval is 15 min. Is this right?
Yes, that is the fastest interval that is allowed from Android - therefore its also the minimum that can be set in DAVdroid.