Fatal error: Uncaught Error: Class "Zend\Validator\Barcode\AbstractAdapter" not found in /home/rogertabor/public_html/concrete/vendor/zendframework/zend-validator/src/Barcode/Code39.php:12 Stack trace: #0 {main} thrown in /home/rogertabor/public_html/concrete/vendor/zendframework/zend-validator/src/Barcode/Code39.php on line 12