Layout startup problem

When I try to open layout it is opening dozens of historic files many causing an error message window to open.
This started yesterday and the product is unusable.
I have uninstalled and reinstalled SketchUp 2019 but the problem persists.
I don’t know what to do. Help!
Is there a way of clearing the Layout history?
Any ideas?

So what changed on your computer yesterday? SU/LO2019 hasn’t changed in nearly two years.

Check in Preferences>Startup. What is selected in the Startup section?
Screenshot - 10_13_2021 , 8_28_01 AM

When you installed/reinstalled SketchUp did you right click on the downloaded installer and choose Run as administrator or did you just double click on it?