Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/lidia/vendor/symfony/http-foundation/Tests/Session/Storage/MockFileSessionStorageTest.php:24 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/symfony/http-foundation/Tests/Session/Storage/MockFileSessionStorageTest.php on line 24