notification on mac won't go away
I just upgraded to Mojave. I received a phone call on my iPhone and a notification popped up in the upper right hand corner of my screen. No matter what I do, the notification of the call coming in won't go away. How do I get rid of it? All the issues about persistent notifications seem to be in iPhone discussions, not Mac support discussions.
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Mac mini, macOS High Sierra (10.13.6), (2.6 Inte core i5)