My fix in WordPress for the following error – Fatal error: Allowed memory size of bytes exhausted (tried to allocate bytes) in /home
I run my websites on a VPS so I have direct access to restart my MySQL service. By restarting the service it has fixed my fatal error issue. I have read you can also increase the memory size in your php.ini file but a simple restart of MySQL fixed my issue.
Restarting MySQL also fixes the missing tags and categories issue with WordPress.
Feel free to leave comments if you have any other fixes for the Fatal Error issue to help out fellow WordPress users.