Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/web/yii/basic/vendor/symfony/browser-kit/Tests/CookieTest.php:17 Stack trace: #0 {main} thrown in /var/www/html/web/yii/basic/vendor/symfony/browser-kit/Tests/CookieTest.php on line 17