php - Redirecting to authentication dialog - "An error occurred. Please try again later"

Question

Why does it always happen to me?

This happens after my application verify for user user login and redirect user to the authentication page:

https://www.facebook.com/dialog/oauth?client_id=XXX&redirect_uri=http%3A%2F%2Fexample.com%2Fmyappname%2F&state=YYYYYY&scope=offline_access%2Cpublish_actions

But instead of showing the authorization page, Facebook shows an error page with

An error occurred. Please try again later.

Is there any configuration I have to do before try to authenticate my users?

All is done with PHP using the PHP-SDK classes.

Answer 1

I have had the same problem as you.

From the Facebook Developers Apps page, make sure that the Sandbox Mode is disabled.