@thomas-ama, I’m running into the same issue you are now having
I have defined by swagger documentation and included it in the Body attribute of the ApiGatewayRestApi Resource section, but am getting
An error occurred: ApiGatewayDeployment1554726393541 - No integration defined for method (Service: AmazonApiGateway; Status Code: 400; Error Code: BadRequestException; Request ID: ...).
Did you ever find a way to resolve this issue?