Fatal error: Uncaught Error: Class "Inventory_MassEditRecordStructure_Model" not found in /home/itenafrwmy/vtiger/modules/PurchaseOrder/models/MassEditRecordStructure.php:14 Stack trace: #0 {main} thrown in /home/itenafrwmy/vtiger/modules/PurchaseOrder/models/MassEditRecordStructure.php on line 14