$ npx keycloakify
🔏 Building the keycloak theme...⌚
node:events:491
      throw er; // Unhandled 'error' event
      ^

Error: connect ETIMEDOUT 140.82.121.3:443
    at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1300:16)
Emitted 'error' event on ClientRequest instance at:
    at TLSSocket.socketErrorListener (node:_http_client:494:9)
    at TLSSocket.emit (node:events:513:28)
    at emitErrorNT (node:internal/streams/destroy:151:8)
    at emitErrorCloseNT (node:internal/streams/destroy:116:3)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
  errno: -4039,
  code: 'ETIMEDOUT',
  syscall: 'connect',
  address: '140.82.121.3',
  port: 443
}

Node.js v18.11.0