As we see that your port 8080 is showing. EDB Postgress process which indicates that you might be Running a background Postgress process on your Laptop which is causing conflict with the Sandbox Ambari port 8080.
So please stop the EDB postgress process on your laptop and then try accessing the port 8080 again.
@jay kumar Thanks Jay for your response. I have uninstalled EDB postgress from my machine as I am no longer using it. I have also checked the task manager for any background services related to postgres EDB. But could not find any. Not sure how to track which service belongs to EDB postgress. Is there a way i can find that?