Fatal error: Out of memory (allocated 2097152) (tried to allocate 20480 bytes) in /var/www/live/vendor/magento/framework/Serialize/Serializer/Serialize.php on line 42

Fatal error: Out of memory (allocated 2097152) (tried to allocate 20480 bytes) in /var/www/live/vendor/magento/framework/Session/SaveHandler.php on line 131

Warning: Unknown: Cannot call session save handler in a recursive manner in Unknown on line 0

Warning: Unknown: Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions) in Unknown on line 0