The code does not work for me

[swag-eag]

Hi

I wrote the file: snippet.js

const { createViewerServer } = require('@pcan/leveldb-viewer');
var levelup = require('levelup')
var encode = require('encoding-down')
var leveldown = require('leveldown')

const db = levelup(encode(leveldown('/home/emilio/proyectos/swa/data/swa_331110-1/node0/data/blockstore.db/'), { keyEncoding: 'buffer', valueEncoding: 'json' })); 
const server = createViewerServer(db); // This returns a Node.JS HttpServer.
server.listen(9090); // you may invoke listen...
server.close() // ...and close.

I have used: node -v

v18.19.1
v20.11.1

I installed:

npm i @pcan/leveldb-viewer
npm i levelup
npm i levelup
npm i encoding-down

I run: node snippet.js

And I do not get any error.

But: http://localhost:9090 Does nothing... Nor an error message...

Can you help me?

Thanks