fix - bug of edit price features in distribution

apps/product/signals.py

@@ -66,6 +66,14 @@ def update_quota_remaining(sender, instance, **kwargs):
     if getattr(instance, '_from_signal', False):
         return
 
+    # when delete object, prevent from update fields error
+    # if kwargs.get('signal') == post_delete:
+    if instance.trash:
+        if instance.parent_distribution:
+            remaining_distribution_weight(instance.parent_distribution)
+    else:
+        remaining_distribution_weight(instance)
+
 
 def update_product_stats(instance: Product, distribution: QuotaDistribution = None):
     """ update all stats of product  """