My sunroof just started leaking. I can't find any drainage. Is it a seal problem?

These types of issues are hard to diagnose over the internet. It could be leaking from many different areas so a hands-on inspection is needed. Could be the drain tube fell off or a bad seal. Best bet is to have a friend apply water from a hose to the area while you sit in the car with a flashlight inspecting. Use this link to find a good shop near you. https://repairpal.com/repair-shops Alex