Login with Google and Facebook

Hello . We tried to log in for these two platforms (Google and Facebook) but the instructions in the forum are already old. Could you help us do that, because we followed the steps but we always have an error:

Authorization Error
Error 400: redirect_uri_mismatch
The redirect URI in the request, https://fullstock.ro/contul-meu/google/oauth2callback, does not match the ones authorized for the OAuth client. To update the authorized redirect URIs, visit: https://console.developers.google.com/apis/credentials/oauthclient/${your_client_id}?project=${your_project_number}