Permanent popup "unable to send response to invitation"
Hello. Please help to fix the issue with iPhone X.
I get popup "unable to send response to invitation" every ~30 minutes. At the morning when I unlock iPhone I get ~10-15 popups one by one. It really bothers.
I know that it's related to Calendar application. How can I fix it? How can I make Calendar application not to show this popup each time?
What I have already tried:
- disable / enable Calendar sync switcher in iCloud settings
- restart iPhone
- checked all invitations in Calendar and answered all invitations
Screen of popup below
iPhone X