Can't run the project

[prvsousa]

I'm trying to run this project with usage code but I got:

module.js:549
    throw err;
    ^

Error: Cannot find module 'gossip-discovery'
    at Function.Module._resolveFilename (module.js:547:15)
    at Function.Module._load (module.js:474:25)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/home/patriciarvsousa/peerDiscovery/js-libp2p-gossip-discovery/start.js:1:87)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)

How can I solve this?