Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/invfsanzgeohti/public_html/vendor/symfony/http-foundation/Tests/RequestStackTest.php:18 Stack trace: #0 {main} thrown in /home/invfsanzgeohti/public_html/vendor/symfony/http-foundation/Tests/RequestStackTest.php on line 18