Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/message_gateway/vendor/symfony/http-kernel/Tests/Fragment/SsiFragmentRendererTest.php:21
Stack trace:
#0 {main}
thrown in /home/app/htdocs/message_gateway/vendor/symfony/http-kernel/Tests/Fragment/SsiFragmentRendererTest.php on line 21