Amplify-js: two issues: InvalidLambdaResponseException for email link verification and Auth.forgotPasswordSubmit

[rush86999]

Describe the bug
A clear and concise description of what the bug is.

As described in the title, implementing both of these amplify cognito functions results in the response above:

Invalid lambda function output : Invalid JSON

To Reproduce
Steps to reproduce the behavior:
for cognito

1. go to console
2. select email link verification
3. try amazon subdomain or your own domain, same results.
4. there was also a bug with code verification so I switched back to link verification.

for change password

1. implement amplify code and get a response.
   here's my function implementation

  submitForgotPasswordNewPasswordForm = async ({
    code,
    password,
    email,
  }) => {
    try {

      console.log(code, password, email, ' this is code and password');
      const data = await Auth.forgotPasswordSubmit(email, code, password);
      console.log(data, ' data after password resetting.');

      this.setState({
        success: {
          Header: 'Password reset successfully',
          Content: 'Your password was successfully reset. You may go back to login to enter new password',
        },
        error: null,
      });
    } catch (e) {
      this.setState({
        error: {
          Header: 'Something went wrong',
          Content: `Please try again a few times. If still doesn't work then we will be happy to help. Here's the bug: ${e && e.message ? e.message : e}`,
        },
        success: null,
      });
      console.error(e, ' something went wrong with password reset.');
    }
  }

Expected behavior
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

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[jbaldaraje]

I'm having the same issue. Auth.forgotPasswordSubmit

[haverchuck]

@rush86999 @jbaldaraje Which lambda triggers have you implemented, and did you create them with the Amplify CLI?

[stale[bot]]

This issue has been automatically closed because of inactivity. Please open a new issue if are still encountering problems.