How to fix WordPress memory exhausted error by increasing PHP memory limit?

Описание: The memory exhaustion error in WordPress could lead to different results on a WordPress website sometimes resulting in a white screen of death or showing an error message on the screen like the following:
Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 2348617 bytes) in /home/username/public_html/site1/wp-includes/plugin.php on line xxx
Learn more in this video how to overcome this situation and get your site back to its normal functioning.