SIBR viewer does not work on ubuntu when specifying pretrained model path

[Masaya1109]

Hi, thank you for your awesome work. After training a model, I used SIBR viewer to render the trained model, but it does not show anything.

Here is the output of the command line.

There are point cloud folder, cameras.json, cfg_args and input.ply which are needed to render trained model.

I think the viewer is using CPU to render the trained model. Is this the problem?