Fixed divison error
diff --git a/erpnext/stock/get_item_details.py b/erpnext/stock/get_item_details.py
index cbf8217..30d9d70 100644
--- a/erpnext/stock/get_item_details.py
+++ b/erpnext/stock/get_item_details.py
@@ -495,7 +495,7 @@
 	"""
 
 	item_price = frappe.get_doc("Item Price", price_list_rate_name)
-	if desired_qty:
+	if desired_qty and item_price.packing_unit:
 		packing_increment = desired_qty % item_price.packing_unit
 
 		if packing_increment == 0: