Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in E:\xampp\htdocs\stms\vendor\bacon\bacon-qr-code\tests\BaconQrCode\Encoder\EncoderTest.php:21 Stack trace: #0 {main} thrown in E:\xampp\htdocs\stms\vendor\bacon\bacon-qr-code\tests\BaconQrCode\Encoder\EncoderTest.php on line 21