Fatal error: Uncaught Error: Class "Magento\Framework\Component\ComponentRegistrar" not found in /home/jasainfo/public_html/dev/tests/integration/_files/Magento/TestModuleQuoteTotalsObserver/registration.php:9 Stack trace: #0 {main} thrown in /home/jasainfo/public_html/dev/tests/integration/_files/Magento/TestModuleQuoteTotalsObserver/registration.php on line 9