My final goal : I would like to get every single channels in every single guilds I belong to.

As a first step, created simple program that I identify that I am logged in as myself.

I first found my token via this video

In a nutshell the video instructs to get the token via

Chrome -> discord.com -> F12 -> Application -> Local Storage -> filter "token" -> click "Toggle device toolbar" -> voila

Threw it in .env as variable TOKEN=... and my index.js is implemented as followings

const Discord = require("discord.js");
const dotenv = require("dotenv");
dotenv.config();

const client = new Discord.Client({
  intents: [
    Discord.Intents.FLAGS.GUILDS,
  ]
});

client.on('ready', ()=> {
  console.log(`Logged in as ${client.user.tag}`);
});

client.login(process.env.TOKEN);

However, when I run node index.js I receive following errors

D:\SourceTree\discord.js\00_get_server_channel_list\node_modules\discord.js\src\client\websocket\WebSocketManager.js:129
    const invalidToken = new Error(WSCodes[4004]);
                         ^

Error [TOKEN_INVALID]: An invalid token was provided.

Is the token found in the video wrong? Or is there something else I am doing wrong?