Hello and Welcome @shivam to the forum.
It’s a very interesting approach but very hard to control, for 1 or 2 or even 3 bots is fine but more than that bots running on the same server (I’m not sure how you maintained so many resources for all the bots and running concurrently ). Anyways please visit this thread and try to follow the detailed discussion about your current issue: RASA multiple bots on same server . I hope this will solve your issue and good luck with your project.