app.post inserting data error: Cannot Get using NodeJS

I am trying to insert data into the SQL Server database using NodeJS.

When I ran the service and opened the browser-> localhost:5000 and I

got the page:

Error: Cannot Get (404) in NodeJS.

Seeking help if I am missing something. The database table has only 2 columns

Here's my code. Hoping for some assistance, will be highly appreciated

    const express = require('express');
    const sql = require('mssql');
    const cors = require('cors');
    const app = express();
    app.use(cors());
    app.use(express.json());

    const config = {
    user: 'sa',
    password: 'password',
    server: 'ServerName\\MSSQL2019EX',
    database: 'Contacts',
    options: {
        encrypt: false,
        trustServerCertificate: false
      }
    };

    app.post('/', async (req, res) => {
    try {
        await sql.connect(config);
        const pool = new sql.ConnectionPool(config);
        await pool.connect();

        const transaction = new sql.Transaction(pool);
        await transaction.begin();

        try {
            for (const user of req.body) {
                await new sql.Request(transaction)
                    .input('name', sql.NVarChar, user.name)
                    .input('email', sql.NVarChar, user.email)
                    .query(`
                        INSERT INTO Users (Name, Email) 
                        VALUES (@name, @email)
                    `);
            }
            await transaction.commit();
            res.sendStatus(200);
        } catch (err) {
            await transaction.rollback();
            throw err;
        }
    } catch (error) {
        console.error('SQL error:', error);
        res.status(500).send('Database error');
    }
});

app.listen(5000, () => {
    console.log('Server running on port 5000');
});

Asking for suggestion of fixing the script.