Keep getting a message no permission to show top window

[Android Central Question]

Every page I go into or apps I open this message comes up for about 3 to 5 secs... Abit annoying. How do I get rid of it??

 

[Tim1954]

Would this be screen overlay? Try with just one app.
Open settings... Apps... Tap the three dots in top right corner... Tap special access... Tap app that can appear over...
Allow one app this permission. Go back to home screen and open that app...