The Value of PSNR is Nan

[JFcy]

When I used the mip_Nerf 360 dataset trying to train the model , I get such result
The Loss and PSNR printed were nan. Is it normal？

Meanwhile I play the .mp4 file in the responding logs file, it is all dark.

the directory structure and the .txt file is :

[PaiDii]

I met the same problem. Did you solve it?

[PaiDii]

I met the same problem. Did you solve it?

[JFcy]

I met the same problem. Did you solve it?

Sorry, I do not solve it. I find it happened when iter achieved 20000.

[PaiDii]

I find it happened at 5k iters. And I find another question, like this.

Did you get the same result?