Fatal error: Uncaught Error: Interface 'Magento\Payment\Gateway\CommandInterface' not found in /home/esecureh/public_html/magdemo/dev/tests/integration/_files/Magento/TestModuleFakePaymentMethod/Gateway/Command/DoNothingCommand.php:10 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/dev/tests/integration/_files/Magento/TestModuleFakePaymentMethod/Gateway/Command/DoNothingCommand.php on line 10