
More errors
So the .htaccess file was deleted and plugin removed but that fscked up the .htaccess file.
So basically you just need WordPress to rewrite the file and it will get rid of the REST API error.
To do this just go to Settings > Permalinks > Under Common settings make sure something *other than* plain is selected, I’m using Post Name then > Select Save Changes at the bottom
That fixed the issue for me.