Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in D:\xampp\htdocs\erp_api\vendor\sebastian\exporter\tests\ExporterTest.php:16 Stack trace: #0 {main} thrown in D:\xampp\htdocs\erp_api\vendor\sebastian\exporter\tests\ExporterTest.php on line 16