Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/itscm/dev.its.cm/webserivesits/vendor/symfony/flex/tests/Command/DumpEnvCommandTest.php:21 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/webserivesits/vendor/symfony/flex/tests/Command/DumpEnvCommandTest.php on line 21