Using Reverb within Native PHP

[davetown]

Hi, I'm trying to build a standalone information sharing app for music festivals which shares data with other users on a local area network in locations where internet connectivity is not reliable. I've seen some pretty cool announcements about Reverb working seemlessly across both Native PHP and Native PHP mobile apps using an externally hosted Reverb server but should it be possible to communicate between apps on a LAN with Reverb with no connection to the internet with one of the connected apps being the reverb server?

I have a working online app using Reverb but in Native PHP, I am having difficulty getting a websocket connection in local development either running in Herd or native:serve. Despite this I attempted a build but on launch, no window launches and the logs show: production.ERROR: Pusher\Pusher::__construct(): Argument #2 ($secret) must be of type string, null given. I presume the credentials are being hidden when the .env is copied.

I got quite a long way building this same app in Electron Vite with React and Socket.io but stopped when Native PHP was launched as I'm a good deal more familar with Laravel, Livewire etc

Any help gratefully received.