DH_NVR4XXX-4KS2 error extracting!

[ur7imd]

./extract.py DH_NVR4XXX-4KS2_MultiLang_V4.001.0000005.1.R.210713.bin
WARNING Autodetected config: NVR4XXX-4KS2
INFO Extracting 8 files to: 'DH_NVR4XXX-4KS2_MultiLang_V4.001.0000005.1.R.210713.bin.extracted'
INFO Processing 'Install.lua'.
INFO Processing 'u-boot.bin.img'.
INFO Processing 'uImage.img'.
INFO Processing 'romfs-x.squashfs.img'.
Can't find a SQUASHFS superblock on DH_NVR4XXX-4KS2_MultiLang_V4.001.0000005.1.R.210713.bin.extracted/romfs-x.squashfs.img.raw
ERROR 'SquashFS' handler returned non-zero return value for file: 'romfs-x.squashfs.img.raw'
Traceback (most recent call last):
File "./extract.py", line 238, in
extractor.Extract(args.source)
File "./extract.py", line 108, in Extract
raise Exception("Handler returned non-zero return value!")
Exception: Handler returned non-zero return value!