Hello everyone,
I want to update multiple records of "sale.order.line" products, using Odoo Xmlrpc

I used this code:
  for (let i = 0; i <sell.products.length; i ++) {
                  
          var inParams = [];
          inParams.push ([value1 [i]]);  //id to update
          inParams.push ({
            'name': sale.products [i] .name,
            'product_uom_qty': sales.products [i] .product_uom_qty,
            'price_unit': sales.products [i] .price_unit,
            'product_id': sales.products [i] .product_id
          });
          var params = [];
          params.push (inParams);
          db.execute_kw ('sale.order.line', 'write', params, function (err, value) {
            if (err) {
              return console.log (err);
            }
            return console.log ('Result2:', value);
          });
        } 

and here is the error: 
raise psycopg2.OperationalError (msg) \ npsycopg2.OperationalError: Unable to use a closed cursor.

I use Odoo version 12
thank you in advance