Cloud Foundary python app deployment error

ecf-error.pngI have created a python application which needs to be deployed on cloud. Code also uses the hand db of the cloud foundary. When I tried pushing the app on cf environment, it shows healthcheck error, stable instance is not getting build. I tried setting the health check to HTTP and restarted the application, yet it is showing the same error. Error is "Instance never healthy after 1m0.5s: Failed to make HTTP request to '/' on port 8080: connection refused, reason: CRASHED" Screenshot is attached here. I have to use port 23803(which I have explicitly defined in the python program) yet it points to 8080.