diff --git a/app/controllers/oqs/edit_controller.rb b/app/controllers/oqs/edit_controller.rb
index e8f0edb5..73458b82 100644
--- a/app/controllers/oqs/edit_controller.rb
+++ b/app/controllers/oqs/edit_controller.rb
@@ -39,8 +39,10 @@ class Oqs::EditController < BaseOqsController
       if ENV["SERVER_MODE"] != "cloud" && order.source == 'cashier' #no print in cloud server
         # print
         assigned_item = AssignedOrderItem.find_by_instance_code(order_item.item_instance_code)    
-        assigned_items = AssignedOrderItem.where("item_code='" + assigned_item.item_code + "' AND " + "order_id='" + assigned_item.order_id + "'")
-        
+        assigned_items = nil
+        if !assigned_item.nil?
+           assigned_items = AssignedOrderItem.where("item_code='" + assigned_item.item_code + "' AND " + "order_id='" + assigned_item.order_id + "'")
+        end  
         if !assigned_items.nil?
           assigned_items.each do |assign_item|
             # order queue stations