NodeJS Subdomain w/ vhost and greenlock-express [closed]

I'm new to Node and I want my website, working with subdomains for my college projects using vhost .

However, I need to have it secured due to the requirement for .app domains, so I'm using greenlock-express to automate it.

Don't be frontin', yo! TLS SNI 'giphy.example.com' does not match 'Host:potatoes.example.com'

I've tried using the vhost example in the repo, but it doesn't look like server-static supports express apps.

Any tips on how to get this working? I keep hearing about reverse proxies, but I'm not sure if it's worth the effort as I don't even know if it would work - would it help?

server.js

#!/usr/bin/env node'use strict';// DEPENDENCIESconst express = require('express');const vhost   = require('vhost');const path    = require('path');const glx     = require('greenlock-express');// MIDDLEWAREconst app = express();const giphyApp = require('../giphy-search');const potatoesApp = require('../rotten-potatoes');const portfolioApp = require('../falsepath.app');// ROUTESapp.use(vhost('giphy.example.com', giphyApp));app.use(vhost('potatoes.example.com', potatoesApp));app.use(portfolioApp);// GREENLOCK for HTTPSglx.create({    version: 'draft-11',    server: 'https://acme-v02.api.letsencrypt.org/directory',    email: 'falsepathOO@example.com',    agreeTos: true,    approveDomains: [ 'example.com', 'giphy.example.com', 'potatoes.example.com' ],    configDir: '~/.config/acme/',    app: app,    communityMember: false}).listen(80, 443);