Istio is not working according to any code changes/replacement in my springboot applicaiton

Hi All,

I have configured Istio as a service mesh in my kubernetes cluster and it was working as per expectation till last week. I have done some code changes and added a new microservice to my existing application.
However after containerizing the service and redeplying it, Istio gateway is not working as per expectation.
Can someone please put some light for help ?