Unknown Errormessage

Hi there, @donsenilo1968,

Can you check the server response on your end? The request is a POST with the path: /wp-json/regenerate-thumbnails/v1/regenerate/{ID}

W likely find some clue in this response.

If you aren’t familiar with how to inspect the network in your browser, you can see some instructions here:?https://developers.google.com/web/tools/chrome-devtools/network?and here:?https://developer.mozilla.org/en-US/docs/Tools/Network_Monitor

Let us know what you find out!