[UPTD]Singleton Error Corrected

invoice_stock_move/models/invoice_stock.py

@@ -31,7 +31,7 @@ class InvoiceStockMove(models.Model):
     def _default_picking_receive(self):
         type_obj = self.env['stock.picking.type']
         company_id = self.env.context.get('company_id') or self.env.user.company_id.id
-        types = type_obj.search([('code', '=', 'incoming'), ('warehouse_id.company_id', '=', company_id)])
+        types = type_obj.search([('code', '=', 'incoming'), ('warehouse_id.company_id', '=', company_id)], limit=1)
         if not types:
             types = type_obj.search([('code', '=', 'incoming'), ('warehouse_id', '=', False)])
         return types[:1]
@@ -40,7 +40,7 @@ class InvoiceStockMove(models.Model):
     def _default_picking_transfer(self):
         type_obj = self.env['stock.picking.type']
         company_id = self.env.context.get('company_id') or self.env.user.company_id.id
-        types = type_obj.search([('code', '=', 'outgoing'), ('warehouse_id.company_id', '=', company_id)])
+        types = type_obj.search([('code', '=', 'outgoing'), ('warehouse_id.company_id', '=', company_id)], limit=1)
         if not types:
             types = type_obj.search([('code', '=', 'outgoing'), ('warehouse_id', '=', False)])
         return types[:4]