Won't start, check brake system warning

What is your question?

Battery was replaced 3 months ago, it was brand new. Oil was changed 1,000km ago. Brake fluid level is good. Turn the key and won't start. Get the warning on the dash display CHECK BRAKE SYSTEM. Not a clue what's wrong, been driving it every day to and from work since the battery was replaced with no issues. Checked the battery cables and all are secure and tight. Handbrake is not on at all. No leaks and oil is good.

What makes this problem better or worse?

Nothing

How long has your 2010 Honda Insight had this problem?

Today