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SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`c2_db1`.`catalog_compare_item`, CONSTRAINT `FK_CAT_CMP_ITEM_PRD_ID_CAT_PRD_ENTT_ENTT_ID` FOREIGN KEY (`product_id`) REFERENCES `catalog_product_entity` (`entity_id`) ON DELETE CASCADE ON UPDA), query was: INSERT INTO `catalog_compare_item` (`visitor_id`, `customer_id`, `product_id`, `store_id`) VALUES (?, ?, ?, ?)
Trace: #0 /var/www/clients/client2/web2/web/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute(Array) #1 /var/www/clients/client2/web2/web/app/code/core/Zend/Db/Statement.php(291): Varien_Db_Statement_Pdo_Mysql->_execute(Array) #2 /var/www/clients/client2/web2/web/lib/Zend/Db/Adapter/Abstract.php(480): Zend_Db_Statement->execute(Array) #3 /var/www/clients/client2/web2/web/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('INSERT INTO `ca...', Array) #4 /var/www/clients/client2/web2/web/lib/Varien/Db/Adapter/Pdo/Mysql.php(504): Zend_Db_Adapter_Pdo_Abstract->query('INSERT INTO `ca...', Array) #5 /var/www/clients/client2/web2/web/lib/Zend/Db/Adapter/Abstract.php(576): Varien_Db_Adapter_Pdo_Mysql->query('INSERT INTO `ca...', Array) #6 /var/www/clients/client2/web2/web/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(453): Zend_Db_Adapter_Abstract->insert('catalog_compare...', Array) #7 /var/www/clients/client2/web2/web/app/code/core/Mage/Core/Model/Abstract.php(318): Mage_Core_Model_Resource_Db_Abstract->save(Object(Mage_Catalog_Model_Product_Compare_Item)) #8 /var/www/clients/client2/web2/web/app/code/core/Mage/Catalog/Model/Product/Compare/Item.php(110): Mage_Core_Model_Abstract->save() #9 /var/www/clients/client2/web2/web/app/code/core/Mage/Catalog/Model/Product/Compare/List.php(51): Mage_Catalog_Model_Product_Compare_Item->save() #10 /var/www/clients/client2/web2/web/app/code/core/Mage/Catalog/Model/Product/Compare/List.php(67): Mage_Catalog_Model_Product_Compare_List->addProduct('144231') #11 /var/www/clients/client2/web2/web/app/code/core/Mage/Catalog/controllers/Product/CompareController.php(63): Mage_Catalog_Model_Product_Compare_List->addProducts(Array) #12 /var/www/clients/client2/web2/web/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Catalog_Product_CompareController->indexAction() #13 /var/www/clients/client2/web2/web/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('index') #14 /var/www/clients/client2/web2/web/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http)) #15 /var/www/clients/client2/web2/web/app/code/core/Mage/Core/Model/App.php(381): Mage_Core_Controller_Varien_Front->dispatch() #16 /var/www/clients/client2/web2/web/app/Mage.php(697): Mage_Core_Model_App->run(Array) #17 /var/www/clients/client2/web2/web/index.php(96): Mage::run('', 'store') #18 {main}

Error log record number: 427906491822