Fatal error: Uncaught Error: Interface 'Magento\Framework\Api\ExtensibleDataInterface' not found in /home/esecureh/public_html/magdemo/dev/tests/api-functional/_files/Magento/TestModuleMSC/Api/Data/CustomAttributeNestedDataObjectInterface.php:8 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/dev/tests/api-functional/_files/Magento/TestModuleMSC/Api/Data/CustomAttributeNestedDataObjectInterface.php on line 8