Неверный запрос при использовании passport.js с экспрессом

Question

Я сделал авторизацию для своего сайта и попытался заполнить страницу регистрации некоторыми частями информации.Когда я заполняю эту информацию, при установке или регистрации у меня появляется событие клика, которое перенаправляет на страницу плохого запроса.Вы можете помочь?

код app.js

//jshint esversion:6
const express = require("express");
const ejs = require("ejs");
const bodyParser = require("body-parser");
const mongoose = require("mongoose");
const session = require("express-session");
const passport = require("passport");
const passportLocalMongoose = require("passport-local-mongoose");
const app = express();
app.use(express.static("public"));
app.set('view engine', "ejs");
app.use(bodyParser.urlencoded({
  extended: true
}));

app.use(session({
  secret: 'Thisismynameisdo',
  resave: false,
  saveUninitialized: true,
}));

app.use(passport.initialize());
// create session
app.use(passport.session());
mongoose.connect("mongodb://localhost:27017/myPortfolio", {useNewUrlParser: true});

const adminUser = new mongoose.Schema ({
  flname : String,
  username : String,
  email : String,
  password: String
});

// hash and salt password
adminUser.plugin(passportLocalMongoose);

const Admin = mongoose.model("Admin", adminUser);

// create strategies

passport.use(Admin.createStrategy());
passport.serializeUser(Admin.serializeUser());
passport.deserializeUser(Admin.deserializeUser());



app.get("/", function(req, res) {
  res.render("frontend/index");
});

app.get("/blog", function(req, res) {
  res.render("frontend/blog");
});


app.get("/404", function(req, res) {
  res.render("frontend/404");
});

app.get("/blogdetail", function(req, res) {
  res.render("frontend/blogdetail");
});

app.get("/blogaudio", function(req, res) {
  res.render("frontend/blogaudio");
});

app.get("/login", function(req, res) {
  res.render("backend/login");
});

app.get("/thanks", function(req, res) {
  res.render("frontend/mailchimp");
});

app.get('/install', function(req, res) {
  res.render("backend/install.ejs");
});

app.get("/admin", function(req, res) {
  if(req.isAuthenticated()) {
    res.render("backend/dashboard");
  } else {
    res.redirect("/login");
  }
});

app.post("/install", function(req, res) {
//registration page
Admin.register({flname: req.body.flname, username: req.body.username, email: req.body.email}, req.body.pass, function(err, user) {
  if (err) {
    console.log(err);
    res.redirect("/install");
  } else {
    passport.authenticate("local")(req, res, function() {
      res.redirect("/admin");
    });
  }
});

});

app.post("/login", function(req, res) {
  const user = new Admin({
    flname : req.body.flname,
    username : req.body.username,
    email : req.body.email,
    password: req.body.pass
  });

req.login(user, function(err){
  passport.authenticate("local")(req, res, function() {
    res.redirect("/admin");
  });
});


});

app.listen(3000, function(req, res) {
  console.log("running => 3000");
});

Я использую содержимое ejs для просмотра своих страниц и анализатор тела, чтобы получить код из файла js приложения.

Код моей страницы регистрации указан ниже:

Администратор

          <form action="/install" method="POST" class="login100-form validate-form">
              <span class="login100-form-title">
                  Installation Process
              </span>

      <div class="wrap-input100 validate-input" data-validate = "enter Full name like : Ismail Taibi">
        <input class="input100" type="text" name="flname" placeholder="Full Name">
        <span class="focus-input100"></span>
        <span class="symbol-input100">
          <i class="fa fa-users" aria-hidden="true"></i>
        </span>
      </div>


      <div class="wrap-input100 validate-input" data-validate = "Valid username is required: abcd123">
        <input class="input100" type="text" name="username" placeholder="Username">
        <span class="focus-input100"></span>
        <span class="symbol-input100">
          <i class="fa fa-user" aria-hidden="true"></i>
        </span>
      </div>

      <div class="wrap-input100 validate-input" data-validate = "Valid email is required: ex@abc.xyz">
        <input class="input100" type="email" name="email" placeholder="Email">
        <span class="focus-input100"></span>
        <span class="symbol-input100">
          <i class="fa fa-envelope" aria-hidden="true"></i>
        </span>
      </div>

              <div class="wrap-input100 validate-input" data-validate = "Password is required">
                  <input class="input100" type="password" name="pass" placeholder="Password">
                  <span class="focus-input100"></span>
                  <span class="symbol-input100">
                      <i class="fa fa-lock" aria-hidden="true"></i>
                  </span>
              </div>

              <div class="container-login100-form-btn">
                  <button type="submit" name="btnRegistrationSubmit" class="login100-form-btn">
                      INSTALL
                  </button>
              </div>

              <div class="text-center p-t-136">

                  <a class="txt2" href="https://www.facebook.com/profile.php?id=100011693180444">
                      Developed by Ismail Taibi
                      <i class="fa fa-long-arrow-right m-l-5" aria-hidden="true"></i>
                  </a>

              </div>
          </form>             </div>      </div>  </div>

    $('.js-tilt').tilt({            scale: 1.1      })  </script> <!--===============================================================================================-->    <script src="admin/js/main.js"></script>