[Bug] cmd não está funcionando após mudança para o https

Olá! O cmd do Windows está retornando um erro após a mudança do http para o https. Vocês poderiam me ajudar?

Este é o código do Visual Studio Code:

const fs = require('fs')
const bodyParser = require('body-parser')
const jsonServer = require('json-server')
const jwt = require('jsonwebtoken')
const https = require('https')

https.createServer(
    {
    key: fs.readFileSync('server.key'),
    cert: fs.readFileSync('server.crt')
    },
    server
).listen(8000, () => {
    console.log("API disponível em https://localhost:8000")
})

O erro que o cmd retorna é o seguinte:

> json-server-api@1.0.0 start-auth
> node server.js

node:events:497
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE: address already in use :::8000
    at Server.setupListenHandle [as _listen2] (node:net:1904:16)
    at listenInCluster (node:net:1961:12)
    at Server.listen (node:net:2063:7)
    at Function.listen (C:\Users\Carlos\api-alurabooks\node_modules\express\lib\application.js:618:24)
    at Object.<anonymous> (C:\Users\Carlos\api-alurabooks\server.js:361:8)
    at Module._compile (node:internal/modules/cjs/loader:1469:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1548:10)
    at Module.load (node:internal/modules/cjs/loader:1288:32)
    at Module._load (node:internal/modules/cjs/loader:1104:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:174:12)
Emitted 'error' event on Server instance at:
    at emitErrorNT (node:net:1940:8)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
  code: 'EADDRINUSE',
  errno: -4091,
  syscall: 'listen',
  address: '::',
  port: 8000
}

Agradeço a atenção e espero o retorno!