修复加工面报错的问题

sf_manufacturing/models/mrp_production.py

@@ -1656,6 +1656,7 @@ class MrpProduction(models.Model):
                         lambda s: s.manual_product_model_type_id.id == production.product_id.product_model_type_id.id
                     )
                 if production.production_type == '自动化产线加工':
+                    if production.product_id.model_processing_panel:
                         for k in (production.product_id.model_processing_panel.split(',')):
                             for route in product_routing_workcenter:
                                 i += 1