Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in C:\xampp\htdocs\enercard\vendor\symfony\css-selector\Tests\Node\SpecificityTest.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\enercard\vendor\symfony\css-selector\Tests\Node\SpecificityTest.php on line 16