Page Edits not Saving Anymore - Deactivated all Plugins

Hi there, changes are not saving for me for some reason.

My details: WordPress 5.4.2
All plugins deactivated except: Beaver Builder Plugin (Pro Version) & Advanced Custom Fields PRO (required for the page to show up)

In Chrome I clear the cache, I clear the BB cache via Settings > Beaver Builder, everything is updated.

I can’t edit an existing page, I just created a new page and it doesn’t save anything.

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