[fix] membership period start update

models/scop_instance.py

@@ -274,12 +274,10 @@ class ScopInstance(models.Model):
                     membership_period = self.env["scop.membership.period"].search(
                         [
                             ("partner_id", "=", partner.id),
-                            ("start", "=", self.date),
                             ("end", "=", False),
                         ],
-                        limit=1,
                     )
-                    if membership_period.start != r.statistic_membership_date:
+                    if membership_period:
                         membership_period.update(
                             {"start": r.statistic_membership_date}
                         )