How to stop MyCroft giving general info and return to homescreen?

When I say something MyCroft doesn’t recognize, it starts reading off information from the internet about what it heard. And then, it’s impossible to break the cycle and return to the home screen. If I say “Stop”, it starts reading off information about some movie with “Stop” in the title. If I say “Homescreen”, it reads a definition of homescreens. If I say “Shut up”, it tells me the origin of the phrase. If I say “Close app”, it tells me about WhatsApp.

I don’t know what skill is causing this, but I want to disable it, and I want to know how to return to the homescreen without physically touching the device or waiting for the skill to auto-terminate.