Fatal error: Uncaught Error: Interface "PHPUnit_Framework_Test" not found in D:\xampp\php\pear\PHPUnit\Framework\TestSuite.php:82 Stack trace: #0 D:\xampp\php\tests\AllTests.php(20): require_once() #1 {main} thrown in D:\xampp\php\pear\PHPUnit\Framework\TestSuite.php on line 82