Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/lidia/vendor/symfony/var-dumper/Tests/Caster/StubCasterTest.php:23 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/symfony/var-dumper/Tests/Caster/StubCasterTest.php on line 23