Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory

[BobWanghz]

I install sdk according to VZenseSDK_User_Guide
When I finish install vdpauinfo:

$ vdpauinfo
display: :0 screen: 0
Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
Error creating VDPAU device: 1

Same question at my VMware ubuntu20.04,and another notebook with ubuntu 16.04.