I have been updating a ton of client's Wordpress sites to the newest version and all has been going smoothly except for this one. There are 11 pages on this site and all but 2 updated with no issues. The other 2 got an update failed message. It looks like a server error as I'm getting a 500 error in the network and console. Here's what it's telling me:
Request Method: POST
Status Code: 500
Remote Address: 188.8.131.52:443
Referrer Policy: strict-origin-when-cross-origin
I have tested to make sure rest API's are enabled everywhere in the site and in plugin settings. I've also tried resetting permalinks and renaming the htaccess file. When I have the classic editor plugin enabled the page updates fine. But as part of my job here, that's not a solution I can stick with. I need to make sure Wordpress is updated to the newest version and all pages can update. Any ideas? Thanks!