for now I switched to beta.armbian.com instead of apt.armbian.com and solved it. Does anyone know what may have happened to have been deleted from https://apt.armbian.com/apt/dists/xenial/?
today doing an update on some machines with armbian:
ARMBIAN 5.25 stable Ubuntu 16.04.2 LTS 3.4.113-sun8i
I checked that the xenial folder is empty:
https://uk.mirrors.fossho.st/armbian/apt/dists/xenial/
how can I solve?