Bug with login button

[MenachemBerkovich]

Hi
Thanks for the amazing course!
I'm trying to start the learning using "Login with Github" green button at https://ooloo.io/project/github-flow/repository page.
I moved to https://c8tnpzdm8i.execute-api.eu-central-1.amazonaws.com/prod/auth/github/callback?code=77ab49f30e710cac9b9f&state=eyJyZWRpcmVjdFVybCI6Imh0dHBzOi8vb29sb28uaW8vcHJvamVjdC9naXRodWItZmxvdy9yZXBvc2l0b3J5In0%3D
and getting the error:

TokenError: The code passed is incorrect or expired.
    at Strategy.OAuth2Strategy.parseErrorResponse (/var/task/node_modules/passport-oauth2/lib/strategy.js:358:12)
    at Strategy.OAuth2Strategy._createOAuthError (/var/task/node_modules/passport-oauth2/lib/strategy.js:405:16)
    at /var/task/node_modules/passport-oauth2/lib/strategy.js:175:45
    at /var/task/node_modules/passport-github/lib/strategy.js:77:16
    at /var/task/node_modules/oauth/lib/oauth2.js:209:7
    at passBackControl (/var/task/node_modules/oauth/lib/oauth2.js:134:9)
    at IncomingMessage.<anonymous> (/var/task/node_modules/oauth/lib/oauth2.js:157:7)
    at IncomingMessage.emit (events.js:326:22)
    at endReadableNT (_stream_readable.js:1241:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)

Can you help me?