Google problems

I have registered a client ID and when I logged in the following error is displaying:

400. This is an error

Error: redirect_uri_mismatch

Application: ....

You can email the developer .......

the redirect uri in the request: http://domain.de/auth/platforms/google-app/google.php did not match a registered redirect uri

The uri is correct but without www. In the config at Google the uri is insert with www.

How can I correct this?

Regards Rappi