Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/message_gateway/vendor/symfony/routing/Tests/RouteCollectionBuilderTest.php:22 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/symfony/routing/Tests/RouteCollectionBuilderTest.php on line 22