Guidelines for paths used by the Resources API:
See Resources.Load for more usage information.
Assets/
├── ...
├── Resources/
│ ├── Missiles/
│ │ ├── PlasmaGun.prefab
│ │ └── ...
│ └── ...
└── ...
//
Correct
var plasmaGun = Resources.Load<GameObject>("Missiles/PlasmaGun");
//
Incorrect
var plasmaGun = Resources.Load<GameObject>("Assets/Resources/Missiles/PlasmaGun.prefab");