Can't get current qty from product ID when Create Production Request
When run wizard "Create Production Request" get this error:
Traceback (most recent call last):
File "/trytond/protocols/jsonrpc.py", line 162, in _marshaled_dispatch
response['result'] = dispatch_method(method, params)
File "/trytond/protocols/jsonrpc.py", line 191, in _dispatch
res = dispatch(*args)
File "/trytond/protocols/dispatcher.py", line 173, in dispatch
result = rpc.result(meth(*c_args, **c_kwargs))
File "/trytond/wizard/wizard.py", line 275, in execute
return wizard._execute(state_name)
File "/trytond/wizard/wizard.py", line 301, in _execute
do_result = do(action)
File "/trytond/modules/stock_supply_production/production.py", line 242, in do_create_
Production.generate_requests(**self._requests_parameters)
File "/trytond/modules/stock_supply_production/production.py", line 97, in generate_requests
quantities, products_period, product2ops)
File "/trytond/modules/stock_supply_production/production.py", line 195, in get_shortage
current_qties[product_id] += qty
KeyError: 773