For one week now I can neither upload new submissions anymore, nor create new issues or access to the Website setting pages Languages, Plugins, Announcements and Navigation Menus. Below you can find some screenshots.
I already did everything recommended in the topic The file could not be uploaded or revised, but it didn’t help.
Also i can not apply the advices from the topic Immersion Theme: create issue problem (Failed Ajax request or invalid JSON returned.), because i can not access the Plugin Settings.
Do you have any other suggestions what my problem could be?
Im working on Windows 10 and OJS 18.104.22.168.