Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in C:\xampp\htdocs\Sistemas_gerais\code-ticket-responsivo\vendor\guzzlehttp\promises\tests\TaskQueueTest.php:6 Stack trace: #0 {main} thrown in C:\xampp\htdocs\Sistemas_gerais\code-ticket-responsivo\vendor\guzzlehttp\promises\tests\TaskQueueTest.php on line 6