Good evening everyone. I am trying to deploy my web application made with Dash and Plotly to the web using Render, but I keep receiving the error featured below when I have no idea what could be causing it. I have done all the pre-requisite actions in my code/GitHub to deploy on Render and used Google Cloud Run successfully, but having to pay $12 a month for deploying a personal project deters me. If anyone has any experience with deploying websites I'd appreciate your help, as this is an issue that has been bugging me (an understatement) for more than a week at this point.

No open ports detected, continuing to scan...


Aug 15 08:44:44 PM==> Docs on specifying a port: 
https://render.com/docs/web-services#port-binding

Aug 15 08:45:20 PM==> Port scan timeout reached, no open ports detected. Bind your service to at least one port. If you don't need to receive traffic on any port, create a background worker instead.