this has just started to happen driver side seatbelt warning works as it should but i get a second seatbelt warning come on it has the seatbelt sign but with a dot beside it.Its on all the time. I have tried the normal things but cant clear it

As far as I know there is only one seatbelt warning light triggered by a) weight on the driver or passenger seat and b) seatbelt not fastened.
Got any junk lying on the passenger seat?