I cannot see the media I have uploaded under the Media Library–it’s a blank space(though I can upload with the html uploader ).
I cannot use the Select All checkbox to select all the plugins on the Plugins page. (I have to do them one at a time)
I cannot set a page or post to Draft.
I have disabled ALL the plugins AND used a default theme (at the same time).
I was editing some images the day before, and it was working fine.
I don’t know what else to do besides build the site back up from scratch.
I am running PHP 7.3.24 WordPress 5.5.3 (the latest I believe)
Edited to add that I have entirely replaced the wp-includes and the wp-admin folders. Also note that the site otherwise seems to work perfectly