Facebook requestwithgraphpath error > facebookErrDomain Code=10000 "Operation could not be completed. (facebookErrDomain error 10000.)"

I tried the facebook-ios-sdk and followed the steps given here. After following all the steps when I executed the applications.

[facebook requestWithGraphPath:@"me" delegate:self]开发者_如何学编程;  

This doesnt seems to be working as I'm getting:

Error Domain=facebookErrDomain Code=10000 UserInfo=0x4b65ac0 "Operation could not be completed. (facebookErrDomain error 10000.)"

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This is an Invalid OAuth 2.0 Access Token error....You might have logged from another device (if you have "offline_access" permission.if not access token expiry date exceeded).

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The same error came to me. At the same time i am running the app in simulator, i also logged into facebook account in the computer browser. The error may be because of this.

The following did the trick to me. Once i logged out of the facebook account in computer browser, this particular error is gone in simulator(app), and able to get the friends list and do the rest.