I have an AWS server running four WordPress sites. All plugins have been deactivated on one of the sites and I cannot enable them.
When I try enabling them in bulk, or individually, there is no error and it even says "Plugin activated.", but they are not.
I have tried changing the ACLs temporarily, so that the webserver has full access. I have tried moving directories of plugins that have been recently updated, but nothing works.
I have found that UpdraftPlus backups stopped being produced by this site and a similarly configured one (similar custom-made theme and nearly the same plugins) two days ago.
Also, I have noticed that WP-CLI has not been working properly with these two similar sites over the last couple of days.
I don't know what else to say. I'm completely stumped.
What can I do about this?