I still get error messages (There has been a critical error on this website.) every time I use the function Enable ajax upload. Do you think you can help me please.
Not sure what we can help with, but if you can point me to a page on the site where i can see the option and where the error occurs i can take a look ?
So in the browser developers console i see this error when uploading an attachment:
[Error] Failed to load resource: the server responded with a status of 500 () (admin-ajax.php)
the 500 error is a serverside error, its really ambiguous. Are you able to check with the host to get an error_log that may provide more info on the 500 error? It should give some pointers as what the issue ie.