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Fatal error: Uncaught TypeError: Argument 1 passed to Mage_Eav_Model_Resource_Entity_Attribute::loadByCode() must be an instance of Mage_Core_Model_Abstract, instance of Mage_Catalog_Model_Resource_Eav_Attribute given, called in /home/actionit/public_html/app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php on line 118 and defined in /home/actionit/public_html/app/code/core/Mage/Eav/Model/Resource/Entity/Attribute.php:99 Stack trace: #0 /home/actionit/public_html/app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php(118): Mage_Eav_Model_Resource_Entity_Attribute->loadByCode(Object(Mage_Catalog_Model_Resource_Eav_Attribute), '4', 'gender') #1 /home/actionit/public_html/app/code/community/Yireo/GoogleTagManager/Observer/ProductListData.php(200): Mage_Eav_Model_Entity_Attribute_Abstract->loadByCode(Object(Mage_Eav_Model_Entity_Type), 'gender') #2 /home/actionit/public_html/app/code/community/Yireo/GoogleTagManager/Observer/ProductListData.php(148): Yireo_GoogleTagManager_Observer_ProductListData->getGender(Object( in /home/actionit/public_html/app/code/core/Mage/Eav/Model/Resource/Entity/Attribute.php on line 99