The message says you are missing the over the wing jetways we added in a GSX update, so it seems you haven't applied that update. However, it should appear everytime you are at CYVR, not just on landing.
I tried both spawning at CYVR and landing there coming from KSEA, and cannot replicate the error. So, first thing to try, is to run the FSDT Live Update when the sim is not running, to be sure you have all the latest jetway models.