Fatal error: Out of memory (allocated 6291456) (tried to allocate 4096 bytes) in /var/www/live/vendor/magento/framework/Serialize/Serializer/Serialize.php on line 42

Fatal error: Out of memory (allocated 6291456) (tried to allocate 16384 bytes) in /var/www/live/vendor/magento/framework/DB/Statement/Pdo/Mysql.php on line 91