we're working on as bot using the webex_bot API. But we ran into a dilemma regarding the exceptions. The goal is: when the user send a message and the bot doesn't understands it, it should show the user a message like "Please try again or I didn't understand" then, show the initial menu card with the available commands.So far we tried to change some tweaks inside the library but nothing worked, the logs show the lack of understanding of the bot but we want to show that to the user. Shed a light for us please.