How do fix the, "invalid client" error after I change the branding for Google Contacts?
After applying the changes to see your domain in the Google Authentication window, you may still get an invalid client error from Google.
That error is displayed when under “APIs & auth” -> “Consent screen” you have empty field. Make sure the field “Product Name” is correctly filled in and that you have also selected an e-mail address. You can find “Consent screen” by going to https://console.developers.google.com/project. Then, click on your project’s name and go to “APIs & auth” -> “Consent screen”.
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