Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in D:\xampp\htdocs\erp_api\vendor\phpunit\php-timer\Tests\TimerTest.php:60 Stack trace: #0 {main} thrown in D:\xampp\htdocs\erp_api\vendor\phpunit\php-timer\Tests\TimerTest.php on line 60