I used it without any problems and it is now unusable.The same problem was seen on 3 sites.There is a manager's permission, but the source of the problem is unknown.There is no plugin I recently added.I did not install any new add-ons that I already used.This prablem was created after the input plugin was loaded on the 3rd party site.There will be a multi-use problem in the same server.Site files are linked to different domains.
Please provide assistance in this regard.Problem display screen added.

I did not install the new plugin.My extensions are the extensions I use.Checked for plugin conflict.No overlap.