Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\kelola-alkes\vendor\simplesoftwareio\simple-qrcode\tests\GeneratorTest.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\kelola-alkes\vendor\simplesoftwareio\simple-qrcode\tests\GeneratorTest.php on line 16