Can't open iMessage on my MacBook Pro
I can't open iMessage on my Mac all of a sudden, so I can't do any of the things in the support info. It worked just fine for years, until I cleared cookies and history last week to try and fix another problem I was having. When I click on my iMessage icon in my nav, nothing happens. Nothing opens. Anyone have advice for getting this to work again? The instructions in help don't address this specific issue.
Mac Pro (2019)