Hello, I have some things missing after i tryed to update from 2019.3 to the latest version which at this time is 2020.2 so the output below

root@kali:~# apt upgrade -y
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
cpp-9 gcc-9-base gcc-9-base:i386 libasan5 python-cffi-backend
0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up kali-desktop-base (2020.2.3) ...
update-alternatives: error: alternative path /usr/share/desktop-base/kali-theme/wallpaper/contents/images/3840x2160.png doesn't exist
dpkg: error processing package kali-desktop-base (--configure):
installed kali-desktop-base package post-installation script subprocess returned error exit status 2
Errors were encountered while processing:
kali-desktop-base
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@kali:~#

so how do I get the missing parts? i don't want to reinstal because that would meen i have to reconfigure everything. I am working on vm .

is there anyway to re initiate the update again? i am not sure why i didin't got all the files so yeah...
going back to the screenshot is not an option...
Thanks for help