NodeJS Sequlize User Registration - node.js

Question

I followed a tutorial and tried to implement some code from this repo https://github.com/ArjunAranetaCodes/MoreCodes-Youtube/tree/master/mern-mysql-login-reg. It takes a user's registration information and stores it in a database.
When I put in http://localhost:5000/users/register in postman I get a Cannot GET /users/register and I don't know why.
I don't know if its a problem with the database or not. I should be able to reach /users/register though shouldn't I?
server.js
const cors = require('cors');
const bodyParser = require('body-parser');
const express = require('express');
const port = process.env.PORT || 5000;
const app = express();
app.use(bodyParser.json());
app.use(cors());
app.use(bodyParser.urlencoded({ extended: false }))
const Users = require('./routes/Users');
app.use('/users', Users)
app.listen(port, () => {
console.log('SERVER RUNNING ON PORT: ' + port);
});
database/db.js
const Sequelize = require("sequelize")
const db = {}
const sequelize = new Sequelize("accounts", "root", "password", {
host: "localhost",
dialect: "mysql",
operatorAliases: false,
pool: {
max: 5,
min: 0,
acquire: 30000,
idle: 10000
}
})
db.sequelize = sequelize
db.Sequelize = Sequelize
module.exports = db
models/User.js
const Sequelize = require('sequelize')
const db = require('../database/db.js')
module.exports = db.sequelize.define(
'user',
{
id: {
type: Sequelize.INTEGER,
primaryKey: true,
autoIncrement: true
},
email: {
type: Sequelize.STRING
},
username: {
type: Sequelize.STRING,
},
password: {
type: Sequelize.STRING,
},
name: {
type: Sequelize.STRING,
},
datetime: {
type: Sequelize.DATE,
defaultValue: Sequelize.NOW
}
},
{
timestamps: false
}
)
routes/Users.js
const express = require('express')
const users = express.Router()
const cors = require('cors');
const jwt = require('jsonwebtoken')
const bcrypt = require('bcrypt');
const User = require("../models/User")
users.use(cors());
process.env.SECRET_KEY = 'secret'
users.post('/register', (req, res) => {
const today = new Date().toDateString()
const userData = {
email: req.body.email,
username: req.body.username,
password: req.body.password,
name: req.body.name,
datetime: today
}
User.findOne({
where: {
email: req.body.email
}
})
.then(user => {
if (!user) {
bcrypt.hash(req.body.password, 10, (err, hash) => {
userData.password = hash
User.create(userData)
.then(user => {
res.json({ status: user.email + 'REGISTERED' })
})
.catch(err => {
res.send('ERROR: ' + err)
})
})
} else {
res.json({ error: "USER ALREADY EXISTS" })
}
})
.catch(err => {
res.send('ERROR: ' + err)
})
})
module.exports = users