Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in C:\xampp\htdocs\enercard\vendor\symfony\debug\Tests\Exception\FlattenExceptionTest.php:30 Stack trace: #0 {main} thrown in C:\xampp\htdocs\enercard\vendor\symfony\debug\Tests\Exception\FlattenExceptionTest.php on line 30