Error Undefined variable

Hi guys I am trying to make my own DayZ server for my clan but I can't play on it because of this in my RPT:
server_hiveReadWriteLar>
20:30:51 Error Undefined variable in expression: _resultarray
20:30:51 File z\addons\dayz_server\init\server_functions.sqf, line 174
20:30:51 Error in expression <y call server_hiveReadWrite;
_outcome = _result select 0;
if(_outcome == "PASS")>
20:30:51 Error position: <_result select 0;
if(_outcome == "PASS")>
20:30:51 Error Undefined variable in...

Error Undefined variable