Animator Rig Configuration Mis-Match Error

I'm doing a tutorial project and I've imported the low poly assets assigned for it into three different projects into two different versions of Unity (2018.46 and 2020.1) and in all cases, the animator gives me the same import warnings: Avatar rig configuration mis-match. Bone length in configuration does not match position in animation file. The Body_int file has a position error of 7.400223; the default tolerance is set to 0.5. Everyone else in the project has no problems with the import or rigs; it just seems to be me\my laptop\my Unity installation. I've uninstalled and re-installed, refreshed and re-imported the asset and always receive the same errors. I've not done animation before. Is there any way to easily fix this so I can use the asset? Nothing I've tried so far has worked.