Facebook canvas app link sharing on wall gives oauth error -

when share facebook canvas app's link on wall, see app image fine in app description area fatal error: uncaught oauthexception: active access token must used query information current user... when debug link debugger says it's valid when try scraped url same error. understand because query user in index page of app error how can make facebook scrapper not give me error.

the canvas app link : https://apps.facebook.com/warriorofnemesis

thanks in advance.

i found reason , answer own question, in case else faces same problem. reason see oauth error message , because display_errors setting set true in script. had done find error on page , forgot had setting true. after turned off , works ok.