node.js – Unable to send an HTML file to frontend in Netlify using NodeJS

I am a little experienced with NodeJS, but I don’t understand most things anyway.

I want to host a NodeJS app using express using Netlify.

(I wanted to learn how to do it for my project, hence why this is very basic)

This is my server.js code:

const express = require("express")
const path = require("path")
const bodyParser = require("body-parser")

const app = express()

app.use(bodyParser.urlencoded({extended: false}))


app.get("/", (req, res) => {
    res.sendFile(path.join(process.cwd(), "index.html"))
})
app.get("/js", (req, res) => {
    res.sendFile(path.join(process.cwd(), 'index.js'))
})
app.get("/css", (req, res) => {
    res.sendFile(path.join(process.cwd(), 'index.css'))
})

app.get("/data", (req, res) => {
    res.sendFile(path.join(process.cwd(), "data.html"))
})


data = {}

app.post("/data/input", (req, res)=>{
    let dataPkg = req.body
    
    data[dataPkg.id] = dataPkg.name

})

app.post("/data/output", (req, res)=>{

    res.send(data)

})


module.exports = {app};

This is my netlify.toml:

[build]
    publish = "dist"
    functions = "netlify/functions"
[functions]
    external_node_modules = ["express", "path", "body-parser"]
[[redirects]]
    force = true
    status = 200
    from = "/*"
    to = "/.netlify/functions/index"

And, here’s how the directory looks like
directory img

I deployed the site using Netlify CLI, but when I try to open it, for any file, I get:

Error: ENOENT: no such file or directory, stat '/var/task/data.html'

What do I do?
(This is my first question on Stack Overflow)