WebSocket connection to 'wss://ms-quest.incpref.com/_stcore/stream' failed:

I deployed my streamlit app on spot vm and its working fine on VM’s IP, but i am adding DNS to hit on my domain, it is giving the webSocet Connection error.
ms-quest.incpref.com this is not my actual domain.(I changed it a bit while posting)
And streamlit application is keep on loading.

I have ran my streamlit application on spot vm after running screener
Using this command - streamlit run app.py

Any help will be much appreciated