White screen in modern interface

Hello,
I switched the map to open street maps in the modern interface. Since then, when logging in, the map appears for a second and then the screen is completely white. It's user-wide. What could be the reason? Is there a way to reset it?
I am thankful for every help. regards Alex

Check browser console for errors.

Here is the error message from Firefox:

Please try without any browser plugins.

Here without add-ons and plugins.

Not sure what the problem is. None of the errors seem to be related.