Fatal error: Uncaught Error: Class "Vtiger_RelationAjax_Action" not found in /home/itenafrwmy/vtiger/modules/PriceBooks/actions/RelationAjax.php:11 Stack trace: #0 {main} thrown in /home/itenafrwmy/vtiger/modules/PriceBooks/actions/RelationAjax.php on line 11