G+ not working

When i try to login via G+, i get the 400 http error and the following:

Error: origin_mismatch

Application: Badger

You can email the developer of this application at: therealklanni@gmail.com

Request Details
=
e=3100077
scope=https://www.googleapis.com/auth/plus.login
response_type=code token id_token gsession
redirect_uri=postmessage
cookie_policy=single_host_origin
proxy=oauth2relay248082853
state=1651136718|0.1778583905
origin=https://therealklanni.github.io
include_granted_scopes=true
client_id=679488287242.apps.googleusercontent.com
request_visible_actions=http://schemas.google.com/AddActivity http://schemas.google.com/CreateActivity

[OscarMontano]

400. That’s an error.

Error: redirect_uri_mismatch

The JavaScript origin in the request, http://therealklanni.github.io, does not match the ones authorized for the OAuth client. Visit https://console.developers.google.com/apis/credentials/oauthclient/679488287242.apps.googleusercontent.com?project=679488287242 to update the authorized JavaScript origins.

Learn more

Request Details
That’s all we know.

[therealklanni]

The GitHub demo is not really meant to be used directly, it's just a demo. As such, I don't have motivation to fix the G+ login. I recommend you fork/clone this repo and modify it to suit your needs and you can then push your own GitHub Page with it (or host it wherever you like).