Inspection tool issue

Hi,

When I try to add a link to the expection tool the live test is working and the URL has green light to get indexated, but when I click on the button it doesn’t work or I get the missage that there was a failure, and that I need to get back within a period of time to check it again.

But this is lasting for three days. Sitemap is okay, nothing wrong with tat. But I can’t index new pages of updated pages anymore.

Is there something wrong and where to look into?

The error in search console:
https://storage.googleapis.com/support-forums-api/attachment/thread-33636417-17520222718032570659.png

Thanks for the help!