pacacc
That won't work. Please check that you are using the correct repositories in the directory /etc/zypp/repos.d/*
According to your post you are using the 2021.08.1 appliance which is openSUSE 15.3 based, but at the same time the package prefix (lp152) shows you are using 15.2 repositories. That's wrong. Please make sure, the repositories are using the correct 15.3 repositories instead.