Website Settings disabled in OJS

Description of issue or problem I’m having:
Website Settings cannot be started. I have previously had article submissions with strange files. I did not open them, just tried delete. No success. Some of the functions work outside Website Settings. This field is completely disabled.

Steps I took leading up to the issue:
The IT people on the server side do not see any problem.

What I tried to resolve the issue:
I have made attempts to remove the false submissions with strange files :
File: google932175671165c2ba.html
File: hello.phtml
File: header.pht

**Application Version - OJS
Additional information, such as screenshots and error log messages if applicable:
Zrzut ekranu 2022-01-27 o 11.44.09