Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\ConfigurationInterface" not found in /home/ntpcbgtpp/public_html/mat1/vendor/knpuniversity/oauth2-client-bundle/src/DependencyInjection/Configuration.php:16 Stack trace: #0 {main} thrown in /home/ntpcbgtpp/public_html/mat1/vendor/knpuniversity/oauth2-client-bundle/src/DependencyInjection/Configuration.php on line 16