my@ubuntu:~/LubanCat_SDK$ ./build.sh ubuntu
processing option: ubuntu
=========Start building ubuntu for arm64=========
==RK_ROOTFS_DEBUG:none RK_ROOTFS_TARGET:desktop==
[ No ubuntu-desktop-rootfs.img, Run Make Ubuntu Scripts ]
./build.sh: line 907: ./mk-base-desktop-ubuntu.sh: No such file or directory
ERROR: Running build_ubuntu failed!
ERROR: exit code 127 from line 907:
ARCH=arm64 ./mk-base-$RK_ROOTFS_TARGET-ubuntu.sh