[facebook] Facebook development in localhost

Try this ---

https://www.facebook.com/help/community/question/?id=589302607826562

1 - Click Apps and then select your app.

2 - Click the Settings button on the left side of the screen.

3 - In the Basic settings, click the Add Platform button below the settings configuration.

4 - Select Website in the platform dialog.

5 - Enter your URL (localhost works here).

6 - In the App Domains text input, add your domain that matches the one in the URL.

7 - Save your settings.