Hi @James,
Here is the error log records from the server:
[Wed Nov 16 08:16:50 2016] [warn] [client 00.000.000.00] mod_fcgid: stderr: PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in /var/www/vhosts/mywebsite.com/wp-includes/plugin.php on line 235, referer: http://mywebsite.com/wp-admin/
[Wed Nov 16 08:18:08 2016] [warn] [client 00.000.000.00] mod_fcgid: read data timeout in 45 seconds, referer: http://mywebsite.com/wp-admin/edit.php?post_type=page
[Wed Nov 16 08:18:08 2016] [error] [client 00.000.000.00] Premature end of script headers: post.php, referer: http://mywebsite.com/wp-admin/edit.php?post_type=page
No other errors are shown in the console.
