Exception: Query error HY000: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away. Query: SELECT 
* 
FROM `structures` 
WHERE  `structures`.`site_id` = '2' AND `active` = 1 AND `shortcut_id` = 0 AND `path` LIKE 'category' AND `parent_id` = 0 AND `structures`.`deleted` = 0 
LIMIT 1
<br />modules/core/database/pdo.php:680 Core_Exception->__construct
<br />modules/core/querybuilder/statement.php:87 Core_DataBase_Pdo->query
<br />modules/core/orm.php:542 Core_QueryBuilder_Statement->execute
<br />modules/core/entity.php:621 Core_ORM->findAll
<br />modules/structure/model.php:615 Core_Entity->findAll
<br />modules/core/command/controller/default.php:798 Structure_Model->getByPathAndParentId
<br />modules/core/command/controller/default.php:115 Core_Command_Controller_Default->getStructure
<br />modules/core/router/route.php:195 Core_Command_Controller_Default->showAction
<br />index.php:249 Core_Router_Route->execute