Crash after update request

Please add information about specific versions installed and the update commands you used, and the command output. This class does exist in Webform 6.3.x but not 6.2.x. Is is possible you downgraded webform?

In the report section I got the message, that I should update the webform module to the new beta-version.
I´ve started the process in the drupal update section.
The website use the drupal version 10.5.1.
Now I can´t do anything on the website and the webseite is blocked for use (see screen attached).

The same problem occurs in Drupal 11.2.2.