Unable to connect RDS postges to my camunda

Hi everyone, I am trying to run the camunda Kubernetes cluster using Helm charts and using RDS as an external database. But I am getting errors again and again. I checked the Kubernetes pods and I saw a config error but when I described my pod than I got this error:

I don’t know How to solve this. If anyone can know this error or tell me the perfect way to do this then please reply.