Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/web/yii/basic/vendor/phar-io/manifest/tests/values/AuthorTest.php:20 Stack trace: #0 {main} thrown in /var/www/html/web/yii/basic/vendor/phar-io/manifest/tests/values/AuthorTest.php on line 20