The maker of that model is trying to DMCA VRChat to get it removed. Ended up removing it from my world a few months ago upon request and to prevent any drama.
@nigelwei0417 Eye tracking should normally be on all the Miku models, however VRChat has currently disabled it this patch due to an issue. It should be back up next patch. @finaltom the model is ready however it seems the right hand is broken away from the arm when viewing it inside VRChat
Animations don't currently have limits, however unless you clicked "Rapier animation" model, it shouldn't be showing that error. That model is a place holder for the actual animation which was created. The standard model will still have the animation, the only one without it is the clean model.