[fix] Get fifo rate only qty exists in batch

erpnext/stock/stock_ledger.py

@@ -300,7 +300,7 @@ class update_entries_after(object):
 
 				# select first batch or the batch with same rate
 				batch = self.stock_queue[index]
-
+				if batch[0]:
 					if qty_to_pop >= batch[0]:
 						# consume current batch
 						qty_to_pop = qty_to_pop - batch[0]

erpnext/stock/utils.py

@@ -133,6 +133,7 @@ def get_fifo_rate(previous_stock_queue, qty):
 		qty_to_pop = abs(qty)
 		while qty_to_pop and previous_stock_queue:
 			batch = previous_stock_queue[0]
+			if batch[0]:
 				if 0 < batch[0] <= qty_to_pop:
 					# if batch qty > 0
 					# not enough or exactly same qty in current batch, clear batch