Zeth Mortis initial quest Path of the Primus Quest bugged

I was doing the Path of the Primus quest to enter Zeth. I can complete the initial fighting to fill the bar, but when I am dismounted and I am supposed to land on the mount below in order to tame it for the flight into the portal I can’t. The screen goes into a loading screen and I end up in Oribos. I have tried several times with no completion.