Fatal error: Uncaught Error: Interface "Magento\Framework\Api\ExtensibleDataInterface" not found in /home/jasainfo/public_html/dev/tests/integration/_files/Magento/TestModuleExtensionAttributes/Api/Data/FakeRegionInterface.php:16 Stack trace: #0 {main} thrown in /home/jasainfo/public_html/dev/tests/integration/_files/Magento/TestModuleExtensionAttributes/Api/Data/FakeRegionInterface.php on line 16