Your version of FOG is old, but that should not cause this error. You say you have a new macbook, what year is it made? After a certain year the macbooks use the T2 chip for security. This T2 chip needs a special FOS Linux kernel to access the hard drive.
What does the content of
/images/<image_name>look like? Can you provide a picture of the contents of that directory?
I don’t know mac os but is it possible that mac os version 10.12 does not support the hardware on this new macbook, where the new macboon needs 10.15 to work correctly?