Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in E:\xampp\htdocs\api.blank_fe\vendor\sebastian\code-unit-reverse-lookup\tests\WizardTest.php:18 Stack trace: #0 {main} thrown in E:\xampp\htdocs\api.blank_fe\vendor\sebastian\code-unit-reverse-lookup\tests\WizardTest.php on line 18