weird sign-in error: 'null failed with error Generate callenges lambda cannot be called.'

This occurs when a valid user is signing in with a blank password (we’re using a custom sign-in react component)

“aws-amplify”: “1.0.6”, “aws-amplify-react”: “1.0.6”

Window debug messages:

[DEBUG] 14:29.772 AuthClass - signIn failure:
code: "UnexpectedLambdaException"
message: "null failed with error Generate callenges lambda cannot be called.."
name: "UnexpectedLambdaException"

[DEBUG] 14:29.773 Analytics - on hub capsule auth:
data:
  code: "UnexpectedLambdaException"
  message: "null failed with error Generate callenges lambda cannot be called.."
  name: "UnexpectedLambdaException"
event: "signIn_failure"

I am mapping the error to something more meaningful for the user as a workaround for now.

if(/null.*error/.test(message)) {    return "Incorrect username or password"; }

[jernejcic]

I’d definitely call this a bug. In a world where password managers are becoming increasingly common, a form has to support copy/paste.

[cbartram]

Same here +1