Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\Application\www\E-Tracking\vendor\phar-io\manifest\tests\values\ExtensionTest.php:26 Stack trace: #0 {main} thrown in D:\Application\www\E-Tracking\vendor\phar-io\manifest\tests\values\ExtensionTest.php on line 26