[UPD]Add store attribute on producer field in account

models/acc_account.py

@@ -58,6 +58,7 @@ class AccAccount(models.Model):
         comodel_name="res.partner",
         related="acc_injection_id.partner_id",
         string="Producteur",
+        store=True
     )
     is_tva = fields.Boolean("Assujetti à la TVA", related="producer_id.is_tva")
     tax_id = fields.Many2one("acc.account.tax", "Taxe", related="producer_id.tax_id")