stdClass Object
(
    [error] => stdClass Object
        (
            [message] => Error validating access token: The session has been invalidated because the user changed their password or Facebook has changed the session for security reasons.
            [type] => OAuthException
            [code] => 190
            [error_subcode] => 460
            [fbtrace_id] => Ah2CbE-FS6Y0grsEVQicfuF
        )

)