Fallback action being called ever time

I have a chatbot (can be found at https://noidapower.com/ ) and it was working fine until i added some more training data. Now it randomly calls the fallback action for queries and it answers correctly the same query at other times. Even when direct intent is being called using “/intent”, then also sometimes the bot replies with the fallback action. I have tried using both Spacy as well as Tensorflow embedding but the problem is still persisting.