400 Bad Request

[alexchen840131]

I want to get the refreshToken and accessToken by using the cmd “python.exe AuthServer.py AlexaClientSDKConfig.json” in windows, but the result is failed.
The fail information is :
400 Bad Request
The redirect URI you provided has not been whitelisted for your application. Please add your redirect URI in the 'Allowed Return URLs' section under 'Web Settings' for your Security Profile on Amazon Developer Portal.
My Security Profile setting as below:
Allowed Origins https://localhost:3000
Allowed Return URLs https://localhost:3000/authresponse

How can I enter the "Allowed Return URLs" and "https://localhost:3000" to solve this issue?