I am trying to use the knowledge base agent to answer a user question. Can anyone tell me what I have done wrong please.

Hey @salmon-exabyte-57459, the AI Task and the knowledge agent are different things. By default, you just fill in your knowledge base sources, turn on the agent, and then ask the bot a question and get an answer. There's a lot more about knowledge bases in our documentation here https://botpress.com/docs/cloud/studio/knowledge-base/