Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /var/www/up.tantal-metall.com/yii_up/vendor/symfony/browser-kit/Tests/ResponseTest.php:17 Stack trace: #0 {main} thrown in /var/www/up.tantal-metall.com/yii_up/vendor/symfony/browser-kit/Tests/ResponseTest.php on line 17