Multiple FormAction class

I’m making a bot that takes user’s information and saves it database. I am able to do that via FormAction. Now my next goal is to understand what kind of cloth categories does the user wants. I made another FormAction class for the purpose where i take the cloth category and process it. Now that bot seems to understand the intent but i get the error

Encountered an exception while running action 'category_form'. Bot will continue, but 
the actions events are lost. Make sure to fix the exception in your custom code.

My is (2.0 KB)