[12.0][FIX] - change deprecated attribute

contract_forecast/models/contract.py

@@ -37,6 +37,6 @@ class ContractContract(models.Model):
                 ]
         ):
             for rec in self:
-                for contract_line in rec.recurring_invoice_line_ids:
+                for contract_line in rec.contract_line_ids:
                     contract_line.with_delay()._generate_forecast_periods()
         return res