const https = require("https"); const app = require("./app/app"); const fs = require("fs"); const server = https.createServer({ //replace exampledomain with the location of the certificates you are using key: fs.readFileSync("/etc/letsencrypt/live/exampledomain.com/privkey.pem"), cert: fs.readFileSync("/etc/letsencrypt/live/exampledomain.com/fullchain.pem") },app) server.listen(443);