Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/lidia/vendor/symfony/config/Tests/Loader/LoaderResolverTest.php:17 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/symfony/config/Tests/Loader/LoaderResolverTest.php on line 17