Fatal error: Uncaught Error: Class 'Magento\Framework\Component\ComponentRegistrar' not found in /home/esecureh/public_html/magdemo/dev/tests/integration/testsuite/Magento/Theme/Model/_files/design/frontend/Test/default/registration.php:9 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/dev/tests/integration/testsuite/Magento/Theme/Model/_files/design/frontend/Test/default/registration.php on line 9