problem about test demo

[million1224]

with torch.no_grad():
corr4d, feature_A_2x, feature_B_2x, fs1, fs2, fs3, fs4 = eval_model_reloc(
model,
{'source_image':src,
'target_image':tgt}
)

It has errors that
/usr/local/lib/python3.7/dist-packages/MinkowskiEngine/MinkowskiSparseTensor.py in init(self, features, coordinates, tensor_stride, coordinate_map_key, coordinate_manager, quantization_mode, allocator_type, minkowski_algorithm, requires_grad, device)
264 assert (
265 features.is_cuda == coordinates.is_cuda
--> 266 ), "Features and coordinates must have the same backend."
267
268 coordinate_map_key = CoordinateMapKey(

AssertionError: Features and coordinates must have the same backend.