Hey there! We've found the following might help you get unblocked faster:

• 📚 Private Networking

• 🧵 Cant resolve internal IP address

• 🧵 Main service can no longer connect to Postgres through internal networking

If you find the answer from one of these, please let us know by solving the thread!

Your frontend needs to call the backend through a public URL. Client machines (machines which access your frontend) cannot access Railway private networking.

Clients machines do not care about backend, this is standard design - you access only the frontend part everything else can be in private network.

Client machines do not made requests to the backend, but only to front end.

The only client is browser ->http->frontend->http(rest)->backend.

Oh wait ..... this JS is running in the browser, thus client IS trying to reach backend ...... ? I would assume server side rendering, but.....

The frontend sits on the client machine, so yes, the client is the one trying to reach the backend. SSR only means the webpages are rendered server-side, but after that, the rendered pages are sent to the client.