Api does not return anything

I have enabled my api using rasa run enable api command, but while accessing through browser I get waiting for server response

show your code!! or use action.py file for custom action for user converstion

My action.py is actually empty. I enable my api and use it directly through an ajax call where I have mentioned the url to my rasa code.

It was working fine yesterday. I’ve been getting waiting for the server response only since today

It says nonetype object has no attribute ‘get’