Lisence ... is not decided.
Thanks for (https://qiita.com/abtc/items/862e2999d7c136201a44) and (https://gist.github.com/doevelopper/46f78eb2c635835c04867da4cdd13904) This script is re-written them works.
You can get a raspi-arm64 ubuntu image.
Do build-rpi3-linux4.14.y-arm64-ubuntu.sh
Other scripts were waited to fix.