Internal server error when calling "Settings"

Recently I get an error message when I call the “Settings” (see attached screenshot).

The following message appears in the ERROR logfile of the server:

[Mon Sep 10 15:04:20 2018] [autoindex:error] [pid 12808] [client] [host] AH01276: Cannot serve directory /is/htdocs/wp1165389_EC0LY9K2KN/www/xxx/cloud/core/doc/user/_static/: No matching DirectoryIndex (index.php,index.html) found, and server-generated directory index forbidden by Options directive

What happened there? I did not make any changes. Did something go wrong with the last update?

Many thanks in advance!!

In English:
The server could not complete the request.
If this happens again, please send the following technical details to your server administrator.
Further details can be found in the server log.

Technical Details
Remote address:
Request identifier: 9gCzEAYTcJ31tUq1eV55

I have same problem…

same here. I’ve disables all apps and the error is still there