Segmentation fault (core dumped) on Ubuntu 20.04

[timonline]

I am trying to decrypt the kernelcache for the iPhone 8 Plus iOS version 14.2

But i keep hitting this segmentation fault. Can anyone help?

./img4 -i kernelcache.release.iphone10 -o kernelcache.release.iphone10.raw
krnl

./Kernel64Patcher kernelcache.release.iphone10.raw kernelcache.release.iphone10.pwn -a
main: Starting...
main: Detected fat macho kernel
Kernel: Adding AMFI_get_out_of_my_way patch...
get_amfi_out_of_my_way_patch: Entering ...
Segmentation fault (core dumped)