one piece Burning Blood texture extract help

[bymutou]

I saw the extraction method of nbb npkv file of opbb on this website, but I use py script to run wrong, ask for help.
This is the website address: https://huailiang.github.io/blog/2019/reverse/
npk file ：https://drive.google.com/file/d/1lRQe3w ... sp=sharing
py file ：https://drive.google.com/file/d/1QSOOG7 ... sp=sharing