warning: SVD did not converge...

[curryandklay]

I downloaded the nerf_real_360 zipfile from NeRF Google Drive. I put the folder into data and renamed it to 'iphone', intending to use the pinecone scene for training; the training command is:
python3 train.py --group=mytest - -model=barf --yaml=barf_iphone --name=real_pinecone --data.scene=pinecone --barf_c2f=[0.1,0.5] --gpu=1

when trying for the first time, an error message shows that the file name format is unrecognizable symbol (I guess it's the Underscores in file names are not recognized as integers), so I removed "IMG" characters and underscore characters from all image names and kept only the numbers; the second try gave the same warning as @YS-IMTech in the closed issue #64 :

How can I find the cause of the problem? I would appreciate your reply, it would be very helpful!