Import failed

I created a WordPress site in “Local by Flywheel” as a local server environment. I made a backup as a *.wpress file. It is 200 MB in size. I manually set the upload limit to 1 GB.

However, I only get the message: “Checking compatibility…

Please do not close this browser window or the import will fail.”

What should I do?

The page I need help with: [log in to see the link]