Warning: mysqli::query(): MySQL server has gone away in /var/www/html/system/library/db/mysqli.php on line 18

Warning: mysqli::query(): Error reading result set's header in /var/www/html/system/library/db/mysqli.php on line 18

Fatal error: Uncaught Exception: Error: MySQL server has gone away<br />Error No: 2006<br />DELETE FROM oc_cart WHERE (api_id > '0' OR customer_id = '0') AND date_added < DATE_SUB(NOW(), INTERVAL 1 HOUR) in /var/www/html/system/library/db/mysqli.php:40 Stack trace: #0 /var/www/html/system/storage/modification/system/library/db.php(78): DB\MySQLi->query('DELETE FROM oc_...', Array) #1 /var/www/html/system/storage/modification/system/library/cart/cart.php(24): DB->query('DELETE FROM oc_...') #2 /var/www/html/system/storage/modification/catalog/controller/startup/startup.php(203): Cart\Cart->__construct(Object(Registry)) #3 /var/www/html/system/storage/modification/system/engine/action.php(51): ControllerStartupStartup->index() #4 /var/www/html/system/storage/modification/system/engine/front.php(101): Action->execute(Object(Registry)) #5 /var/www/html/system/storage/modification/system/engine/front.php(19): Front->execute(Object(Action)) #6 /var/www/html/system/framework.php(110): Front->dispatch(Object(Action), Object(Actio in /var/www/html/system/library/db/mysqli.php on line 40