Ubuntu 16.04 and 18.04 build fail

[multiflexi]

Hi, I tried to build the image in LTS Ubuntu but in both versions the build stalls with no apparent error
build.log

[multiflexi]

I think I solved it, when it hangs it actually is waiting for an input of yes or no. So just inserting y and pressing enter (actually it happens twice) builds the image. Should the FAT partition of SD card be empty?

[multiflexi]

Last comment: the exploit.tar.gz did not include the coreboot.rom, exploit folder does. I also head issue with specific SD card Samsung EVO plus 32GB, it was just waiting for hardware interrupt. SanDisk works.