llff_fern dataset get error width and height must be divisible by 8

[yang1hu]

It is a great project and I try to ran the project, i use the nerf_llff_fern dataset and when it raise the error like this i first run it encouter the error https://github.com/ashawkey/nerf2mesh/issues/81 and then modify the render.py ，the above error occur, i see you success execute with the dataset,is there any other way to handle