Hi everyone,

I’m running into an issue after adding a Redis service to my Railway project.

As soon as I attach Redis to the project, the deployment fails with the following error:

fatal error: unknown

There isn’t much additional context in the logs, which makes it hard to diagnose.

What I’ve checked so far:

• The Redis service is provisioned successfully.

• Environment variables appear to be set.

• The project builds correctly without Redis.

• The error only occurs after linking or referencing Redis.

Questions:

1. Is there a required configuration step after adding Redis?

2. Could this be related to internal networking or environment variable formatting?

3. Are there known issues with Redis templates or specific runtime versions?

If anyone has experienced this or knows what might be causing it, I’d really appreciate the guidance.

Thanks in advance.