AWS Cognito x Facebook - Web Identity Federation

I configured Web Identify Federation between AWS Cognito and Facebook and I'm getting the following error message when I tried to authenticate:

"Can't load URL: The domain of this URL isn't included in the app's domains. To be able to load this URL, add all domains and sub-domains of your app to the App Domains field in your app settings."

I'm struggling to find out which is the correct URL I have to add in the App Domains.
I tried the URL for the static-website on S3 and its CloudFront URL, and it doesn't work.
Does it need a proper domain name to work?

I'm just looking for an example.

Thank you,

Carlos F F FonsecaAsked:
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Laroy ShtotlandIT Security ConsultantCommented:
Carlos, have you seen this whitepaper ?
10d: In Valid OAuth Redirect URIs, add your domain redirect URL, for example, https://your-user-pool-domain/oauth2/idpresponse

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Carlos F F FonsecaAuthor Commented:
Thank you!!! That worked!!!
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