Looks like you're trying to connect to localhost instead of mongo private url, make sure you define variable for mongo url and use the private url of your mongo service, how is your current setup?

Hey so I was able to reproduce the connection issue: Looks like your still running mango on your localhost:8080. I'd recommend just using a MongoDB service. Here are the steps laid out for you: 1. Add a MongoDB service to your project — **New → Database → Add MongoDB** — or use an external provider such as Atlas. 2. On your `vortex-leads-api` service, open **Variables** and add: ``` MONGODB_URI=${{MongoDB.MONGO_URL}} ``` Replace `MongoDB` with your Mongo service's actual name. 3. Redeploy `vortex-leads-api`. Your normal startup log should appear with no connection error. This will be much more reliable then trying to passing a connection string, referencing your Mongo service with environment variables is also much more consistant. If you have to use a self-hosted Mongo container let me know and I'll pass you a update once I reproduce it. Hope this helps, Best Regards :)