Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in C:\xampp\htdocs\enercard\vendor\symfony\http-kernel\Tests\Fragment\FragmentHandlerTest.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\enercard\vendor\symfony\http-kernel\Tests\Fragment\FragmentHandlerTest.php on line 21