films/models/production_logs.py

@@ -142,6 +142,8 @@ class ProductionLogEntry(mixins.CreatedUpdatedMixin, models.Model):
         contributors_ids = set()
         contributors = []
         for asset in self.assets.all():
+            if not asset.static_asset:
+                return []
             for contributor in asset.static_asset.contributors.all():
                 if contributor.pk in contributors_ids:
                     continue