如何处理齿轮工人，致命的错误

I am having trouble handling gearman worker, fatal error. Gearman daemon stops on php fatal error.

I found on this url http://www.vancelucas.com/blog/handling-exceptions-in-gearman-tasks-even-background-ones/ solution but it is not working for me. This is my gearman worker cod:

$task = "send_lead";

$gmw->addFunction("sending_lead", function() use($task) {
    try {
        $result = call_user_func_array($task, func_get_args());
    } catch(\Exception $e) {
        $result = GEARMAN_WORK_EXCEPTION;
        echo "Gearman: CAUGHT EXCEPTION: " . $e->getMessage();

        // Send exception to Exceptional so it can be logged with details
        Exceptional::handle_exception($e, FALSE);
    }

    return $result;
});
while(1)
  $gmw->work();
function send_lead($job)
{
 $send_lead = new Frontend_Model_Index();
  $send_lead->lead(json_decode($job->workload()));

}

Btw I am using zend 1.1.

Update

Error is PHP Fatal error: Call to a member function getSource_state() on a non-object in.

And that is ok error. But how to handle that error. I do not want deamon to be terminated becasue of any error, fatal or not.