Traceback (most recent call last):
  File "/usr/lib/zope/lib/python/Testing/ZopeTestCase/profiler.py", line 80, in __call__
    testMethod()
  File "/home/shufla/work/erp5instance/unit_test/Products/VentisTests/tests/testVentisPricingOfResourcesWithQuantityStepOnPurchaseSupply.py", line 410, in test_01_check_if_pricing_is_correct_if_componet_has_quantity_step_on_purchase_supply
    sequence_list.play(self)
  File "/home/shufla/work/erp5instance/unit_test/Products/ERP5Type/tests/Sequence.py", line 122, in play
    sequence.play(context, sequence_number=i, quiet=quiet)
  File "/home/shufla/work/erp5instance/unit_test/Products/ERP5Type/tests/Sequence.py", line 72, in play
    step.play(context, sequence=self, quiet=quiet)
  File "/home/shufla/work/erp5instance/unit_test/Products/ERP5Type/tests/Sequence.py", line 58, in play
    method(sequence=sequence)
  File "/home/shufla/work/erp5instance/unit_test/Products/VentisTests/tests/testVentisPricingOfResourcesWithQuantityStepOnPurchaseSupply.py", line 218, in stepFillPurchaseSupplyLineDefineRange
    purchase_supply_line.Base_edit(form_id='PurchaseSupplyLine_viewBasePrice')
  File "/home/shufla/erp5/lib/python/Shared/DC/Scripts/Bindings.py", line 306, in __call__
    return self._bindAndExec(args, kw, None)
  File "/home/shufla/erp5/lib/python/Shared/DC/Scripts/Bindings.py", line 343, in _bindAndExec
    return self._exec(bound_data, args, kw)
  File "/home/shufla/erp5/lib/python/Products/PythonScripts/PythonScript.py", line 323, in _exec
    result = f(*args, **kw)
  File "Script (Python)", line 24, in Base_edit
  File "/home/shufla/erp5/lib/python/Products/Formulator/Form.py", line 396, in validate_all_to_request
    result = self.validate_all(REQUEST)
  File "/home/shufla/work/erp5instance/Products/ERP5Form/Form.py", line 475, in validate_all
    value = field.validate(REQUEST)
  File "/home/shufla/erp5/lib/python/Products/Formulator/Field.py", line 266, in validate
    return self._validate_helper(
  File "/home/shufla/erp5/lib/python/Products/Formulator/Field.py", line 255, in _validate_helper
    value = self.validator.validate(self, key, REQUEST)
  File "/home/shufla/work/erp5instance/Products/ERP5Form/ProxyField.py", line 125, in validate
    result = proxy_field.validator.validate(field, key, REQUEST)
  File "/home/shufla/work/erp5instance/Products/ERP5Form/FormulatorPatch.py", line 951, in validate
    year = field.validate_sub_field('year', REQUEST, key=key)
  File "/home/shufla/work/erp5instance/Products/ERP5Form/FormulatorPatch.py", line 90, in Field_validate_sub_field
    return self.sub_form.get_field(id)._validate_helper(
AttributeError: sub_form