Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in C:\xampp\htdocs\electronica\vendor\doctrine\doctrine-bundle\Tests\Twig\DoctrineExtensionTest.php:18 Stack trace: #0 {main} thrown in C:\xampp\htdocs\electronica\vendor\doctrine\doctrine-bundle\Tests\Twig\DoctrineExtensionTest.php on line 18