When I click on a product in my Magento site I get this error:
There has been an error processing your request
Invalid backend model specified:
catalog/product_attribute_backend_groupprice
Trace:
#0 F:\wamp\www\bc\app\code\core\Mage\Eav\Model\Entity\Attribute\Abstract.php(338): Mage::exception('Mage_Eav', 'Invalid backend...') #1 F:\wamp\www\bc\app\code\core\Mage\Eav\Model\Entity\Abstract.php(596): Mage_Eav_Model_Entity_Attribute_Abstract->getBackend() #2 F:\wamp\www\bc\app\code\core\Mage\Eav\Model\Entity\Abstract.php(1425): Mage_Eav_Model_Entity_Abstract->walkAttributes('backend/afterLo...', Array) #3 F:\wamp\www\bc\app\code\core\Mage\Eav\Model\Entity\Abstract.php(877): Mage_Eav_Model_Entity_Abstract->_afterLoad(Object(Mage_Catalog_Model_Product)) #4 F:\wamp\www\bc\app\code\core\Mage\Catalog\Model\Resource\Eav\Mysql4\Abstract.php(630): Mage_Eav_Model_Entity_Abstract->load(Object(Mage_Catalog_Model_Product), 309, NULL) #5 F:\wamp\www\bc\app\code\core\Mage\Core\Model\Abstract.php(225): Mage_Catalog_Model_Resource_Eav_Mysql4_Abstract->load(Object(Mage_Catalog_Model_Product), 309, NULL) #6 F:\wamp\www\bc\app\code\core\Mage\Catalog\controllers\ProductController.php(52): Mage_Core_Model_Abstract->load(309) #7 F:\wamp\www\bc\app\code\core\Mage\Catalog\controllers\ProductController.php(138): Mage_Catalog_ProductController->_initProduct() #8 F:\wamp\www\bc\app\code\core\Mage\Core\Controller\Varien\Action.php(418): Mage_Catalog_ProductController->viewAction() #9 F:\wamp\www\bc\app\code\core\Mage\Core\Controller\Varien\Router\Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('view') #10 F:\wamp\www\bc\app\code\core\Mage\Core\Controller\Varien\Front.php(177): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http)) #11 F:\wamp\www\bc\app\code\core\Mage\Core\Model\App.php(304): Mage_Core_Controller_Varien_Front->dispatch() #12 F:\wamp\www\bc\app\Mage.php(596): Mage_Core_Model_App->run(Array) #13 F:\wamp\www\bc\index.php(103): Mage::run('', 'store') #14 {main}
Error log record number: 1257579136
What is this? How can I solve this?
My Magento version is 1.4.1.1