flex-builder -i mkrfs -r ubuntu:lite -a arm64 fails

[karlgilkey]

Sorry if wrong forum 

Can anybody help with this error

flex-builder -i mkrfs -r ubuntu:lite -a arm64
INSTRUCTION: mkrfs
DISTRO TYPE: ubuntu
DISTRO SCALE: lite
DESTARCH: arm64
generating /home/apps/appwork/nxp/flexbuild_lsdk2004/build/rfs/rootfs_lsdk2004_ubuntu_lite_arm64 ...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (22) The requested URL returned error: 404 Not Found

[karlgilkey]

Issue was entries in this file:
flexbuild_lsdk2004\configs\ubuntu\build.cfg
changed 
ubuntu_base_arm32=ubuntu-base-18.04.2-base-armhf.tar.gz
ubuntu_base_arm64=ubuntu-base-18.04.2-base-arm64.tar.gz
to 
ubuntu_base_arm32=ubuntu-base-18.04.5-base-armhf.tar.gz
ubuntu_base_arm64=ubuntu-base-18.04.5-base-arm64.tar.gz