I'm experiencing a connectivity issue between my API service and PostgreSQL database service on Railway, both deployed in the same project and environment (production).

Issue Details:

• API Service: Running successfully, listening on port 4000

• PostgreSQL Service: Running and ready to accept connections

• Problem: API cannot connect to PostgreSQL at postgres.railway.internal:5432

• Error:PrismaClientInitializationError: Can't reach database server at postgres.railway.internal:####

What I've tried:

1. Restarted both services multiple times

2. Verified DATABASE_URL is correctly configured

3. Confirmed PostgreSQL logs show: "database system is ready to accept connections"

4. Both services are in the same project/environment

5. Verified all environment variables are set correctly

Expected behavior: API should be able to reach PostgreSQL on the private network

Current status: API and PostgreSQL are deployed but cannot communicate internally

Could this be a network isolation issue or a known problem? Is there anything I should check or reconfigure?