Fatal error: Uncaught Error: Class 'chillerlan\QRCodeTest\QRTestAbstract' not found in /home/bucerepful/vendor/chillerlan/php-qrcode/tests/Helpers/BitBufferTest.php:18 Stack trace: #0 {main} thrown in /home/bucerepful/vendor/chillerlan/php-qrcode/tests/Helpers/BitBufferTest.php on line 18