14 lines
482 B
Diff
14 lines
482 B
Diff
diff --git a/tryton/modules/stock/product.py b/modules/stock/product.py
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index e4da113ef3..d195969ca3 100644
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--- a/tryton/modules/stock/product.py
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+++ b/tryton/modules/stock/product.py
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@@ -349,7 +349,7 @@ class Product(StockMixin, object, metaclass=PoolMeta):
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cls.write(*to_write)
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def recompute_cost_price_fixed(self, start=None):
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- return self.cost_price
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+ return self.cost_price or Decimal(0)
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@classmethod
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def _domain_moves_cost(cls):
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