This is very easy
1st format hard drive then name it USB
open terminal and type this
sudo diskutil partitionDisk /dev/disk2 GPT JHFS+ USB R
then create the installer usb normally with Unibeast
thats it
Thanks, Augie! This was driving me bananas until I saw your posts. Cheers.Try extracting copy_apfs.sh from this zip file and replacing the one in Unibeast/Contents/Resources. (Right-click on Unibeast, select Show Package Contents.) All I did was a find/replace of "OS\ X\ Base\ System" with "macOS\ Base\ System" (without the quotes).
I am attaching a screen shot of the folder structure I ended with.
I overwrote the copy_apfs.zip file but I am still getting the error.
I was trying to decipher the paths to manually put everything together but I must be missing something.
The MacBook Pro I am using is also on mojave, not sure if that has any effect?