Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in D:\xampp\htdocs\erp_api\vendor\symfony\console\Symfony\Component\Console\Tests\Input\InputDefinitionTest.php:18 Stack trace: #0 {main} thrown in D:\xampp\htdocs\erp_api\vendor\symfony\console\Symfony\Component\Console\Tests\Input\InputDefinitionTest.php on line 18