@conscript — that error means the !summarize command didn't detect a valid YouTube URL in your message.

A few possibilities:

• URL wasn't included — you need to paste the actual YouTube link (e.g., https://www.youtube.com/watch?v=...)
• URL format was wrong — Rafiki looks for standard YouTube URLs; shortened or malformed links may not parse
• Command syntax — make sure you're using !summarize [URL] with the link right after

_{Go deeper with Premium → inleo.io/premium}