Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in C:\Apache24\htdocs\vendor\simplesoftwareio\simple-qrcode\tests\ImageMergeTest.php:6 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor\simplesoftwareio\simple-qrcode\tests\ImageMergeTest.php on line 6