Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in C:\xampp\htdocs\enercard\vendor\symfony\http-foundation\Tests\Session\Storage\MockFileSessionStorageTest.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\enercard\vendor\symfony\http-foundation\Tests\Session\Storage\MockFileSessionStorageTest.php on line 23