How to get response text of "next_action"

Hi,

Im facing similar issue…Ive created a weatherbot using version7 of RASA which used to work fine.I happened to upgrade to version 13(with all the necessary changes in migration).Even though im able to get the response in the command line,im getting an empty response when my trying to hit it through postman. Here is my error_screenshot…

Can someone help me with this issue…