app.post("/register", (req, res) => {
  let id = req.body.id;
  let name = req.body.name;
  let email = req.body.email;
  cmd = "INSERT INTO emp VALUES(" + id + ", '" + name + "', '" + email + "')";
  conn.connect((err) => {
    if (err) throw err;
    conn.query(cmd, (err, res) => {
      if (err) {
        throw err;
      } else {
        res.sendFile(__dirname + "/result_page html/endpage.html");
      }
    });
  });
});

I tried using res.sendfile inside conn.query but it said res.sendfile is not a function. How do i fix this.