fix Wo Controller / Contractor

app/Http/Controllers/Contractor/WorkOrderController.php

@@ -707,7 +707,10 @@ class WorkOrderController extends Controller
     	$wod = WorkOrder::where('wo',$request->wo)->first();
     	$form = Form::where('_id',$wod->_id)->first();
 		$installer = Staff::with('StaffDetail')->where('_id',$wod->installer_id)->first();
-		info('installer ' . $wod->installer_id);
+		$name = '';
+		if (!empty($installer)){
+			$name = $installer->StaffDetail->name;
+		}
 
     	if(!empty($wod)){
 
@@ -722,7 +725,7 @@ class WorkOrderController extends Controller
 				$formH->status_id = 6;
 				$formH->date = new \MongoDB\BSON\UTCDateTime(time()*1000);
 				$formH->status = 'Pending Installer';
-				$formH->desc = 'This work order been assigned to particular installer ('.$installer->name.')'; 
+				$formH->desc = 'This work order been assigned to particular installer ('.$name.')'; 
 				$form->formstatus()->save($formH);
 
 				array_push($data, array(