Fatal error: Uncaught Error: Class 'Magento\Payment\Model\Method\AbstractMethod' not found in /home/esecureh/public_html/magdemo/vendor/magento/module-offline-payments/Model/Checkmo.php:16 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-offline-payments/Model/Checkmo.php on line 16