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