Fatal error: Uncaught Exception: Error: MySQL server has gone away<br />Error No: 2006<br />SELECT * FROM oc_wkseo_url_alias WHERE `query` = 'category_id=557' AND language_id = '1' in /var/www/html/system/library/db/mysqli.php:40 Stack trace: #0 /var/www/storage/modification/system/library/db.php(61): DB\MySQLi->query('SELECT * FROM o...') #1 /var/www/html/catalog/controller/startup/wkseo_url.php(214): DB->query('SELECT * FROM o...') #2 /var/www/html/system/library/url.php(64): ControllerStartupWkSeoUrl->rewrite('http://www.extr...') #3 /var/www/html/catalog/controller/extension/module/ocmegamenu.php(247): Url->link('product/categor...', 'path=503_557') #4 /var/www/storage/modification/system/engine/action.php(79): ControllerExtensionModuleOcmegamenu->index(Array) #5 /var/www/storage/modification/system/engine/loader.php(48): Action->execute(Object(Registry), Array) #6 /var/www/storage/modification/catalog/controller/common/column_left.php(92): Loader->controller('extension/modul...', Array) #7 /var/www/storage/modificati in /var/www/html/system/library/db/mysqli.php on line 40

Fatal error: Uncaught Exception: Error: MySQL server has gone away<br />Error No: 2006<br />REPLACE INTO `oc_session` SET session_id = '147a008053a326d36f8abd243b', `data` = '{\"language\":\"en-gb\",\"currency\":\"NZD\"}', expire = '2019-12-15 21:33:48' in /var/www/html/system/library/db/mysqli.php:40 Stack trace: #0 /var/www/storage/modification/system/library/db.php(61): DB\MySQLi->query('REPLACE INTO `o...') #1 /var/www/html/system/library/session/db.php(32): DB->query('REPLACE INTO `o...') #2 /var/www/html/system/library/session.php(81): Session\DB->write('147a008053a326d...', Array) #3 [internal function]: Session->close() #4 {main} thrown in /var/www/html/system/library/db/mysqli.php on line 40