Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/lidia/vendor/symfony/css-selector/Tests/Parser/TokenStreamTest.php:18 Stack trace: #0 {main} thrown in /home/app/htdocs/lidia/vendor/symfony/css-selector/Tests/Parser/TokenStreamTest.php on line 18