java.lang.NullPointerException: Attempt to invoke virtual method 'long java.lang.Long.longValue()' on a null object reference

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I used the Doodle app to add an calender entry. Since then DAVDroid fails to synchronise the account (caldav with ownCloud 8.0.3)

https://paste.fedoraproject.org/471454/75218147/

Seems like the Doodle app inserts an event that has neither dtend nor duration, which is not allowed.

Could you please provide more details, including steps to reproduce)?

I could reproduce the problem, which is exactly as said as above. I have contacted Doodle about it.

Also, ical4android has been modified to be more robust in such cases. The changes will be incorporated into the next DAVdroid version.