stdClass Object
(
    [error] => stdClass Object
        (
            [message] => Error validating access token: Session key is malformed.
            [type] => OAuthException
            [code] => 190
            [error_subcode] => 0
            [fbtrace_id] => AQVHS8yKEnRjGJ9S2mdUE8P
        )

)