: Ensure your model is set to Humanoid in the FBX import settings.
: Most animations are designed specifically for Root Motion. If your project does not use it, you may need to edit the clips to prevent them from appearing "awkward and exaggerated". Download File RPG Character Mecanim Animation P...
The pack is designed to be a "ready-to-drop" solution for humanoid characters using Unity's Mecanim system. : Ensure your model is set to Humanoid