Latest Kirkwood rootfs problem apt-get update (3 replies)

Hallo, I've made a clean install with the latest rootfs on my Pogo E02. It starts, but if im make apt-get update I've got a problem:

root@debian:~# apt-get update
Hit:1 http://security.debian.org stretch/updates InRelease
Ign:2 http://ftp.us.debian.org/debian stretch InRelease
Hit:4 http://ftp.us.debian.org/debian stretch Release
Hit:3 http://cdn-fastly.deb.debian.org/debian stretch-updates InRelease
Reading package lists... Done
W: Download is performed unsandboxed as root as file '/var/lib/apt/lists/partial/ftp.us.debian.org_debian_dists_stretch_InRelease' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
root@debian:~#

Did I make something wrong?