How to clear Talk to your robot All Content?

even i restart rasa x i cant clear Talk to your robot QAQ and why the meassage be cover ? like down picture ↓

Hey @yuchichang, you can’t clear the history, but you can restart the conversation using /restart (make sure MappingPolicy is in your configuration file for this). As the the UI rendering, we’ll try to track that down – what browser is this happening in?