If you enabled openXR and it is set to primary then you are running OpenXR not SteamVR as the active runtime in engine. OpenXR does not have the OpenVR functions that the module requires, it shouldn’t be crashing but I wouldn’t rule it out as I never tested that mix.
The OpenXRExpansion module has its own version of the hand animation setup, its even a little cleaner.
See: https://vreue4.com/documentation?section=openxr-hand-pose-component
People don’t seem to like openXR having only hard transforms as much as OpenVRs curl system, so I intend on looking into approximating those curls soon. I just need to finish some UE5 stuff first.