Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/lidia/vendor/symfony/config/Tests/Definition/Builder/BooleanNodeDefinitionTest.php:17 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/symfony/config/Tests/Definition/Builder/BooleanNodeDefinitionTest.php on line 17