Fatal error: Uncaught Error: Class "Magento\Framework\Model\AbstractExtensibleModel" not found in /home/jasainfo/public_html/dev/tests/api-functional/_files/Magento/TestModuleMSC/Model/Data/CustomAttributeNestedDataObject.php:16 Stack trace: #0 {main} thrown in /home/jasainfo/public_html/dev/tests/api-functional/_files/Magento/TestModuleMSC/Model/Data/CustomAttributeNestedDataObject.php on line 16