Cognito User AWS forget password step error

[ghost]

have an error for the forget-password step.

I have seen how to do on the exemple given in the AWS github.

This is how I do :

AuthService.forgetPassword = function(username) {
            var userData = {
                Username : username,
                Pool : userPool
            };
            cognitoUser = new AWSCognito.CognitoIdentityServiceProvider.CognitoUser(userData);
            cognitoUser =
                cognitoUser.forgotPassword({
                   onSuccess: function (result) {
                       console.log('call result: ' + result);
                   },
                   onFailure: function(err) {
                        alert(err);
                   },
                   inputVerificationCode() {
                     var verificationCode = prompt('Please input verification code ' ,'');
                     var newPassword = prompt('Enter new password ' ,'');               
               cognitoUser.confirmPassword(verificationCode, newPassword, this);
                    }
               });
            };

I can not figure out why its not working .

I always have this error :

Error:
callListeners
emit
emitEvent
a
[52]</d.prototype.runTo
[52]</d.prototype.runTo/<
a/<
emitEvent/<
callListeners
emit
emitEvent
a
[52]</d.prototype.runTo
[52]</d.prototype.runTo/<
a/<
emitEvent/<
callListeners f
emit
emitEvent
a
[52]</d.prototype.runTo
[52]</d.prototype.runTo/<
a/<
emitEvent/<
callListeners
emit
emitEvent
a
[52]</d.prototype.runTo
[52]</d.prototype.runTo/<
a/<
emitEvent/<
callListeners
f
c/<
finishRequest
handleRequest/<

Note that the verificationCode and the newPassword getted are well setted.
Does anyone know how to do ?

[jbailey2010]

Can you re-paste the error? I can't tell what's going on in what's there.