trying to update with `zypper dup` 
i am notified of a vendor change i have to acknowledge. 
In the summary zypper notifies me of 

libliveMedia106  openSUSE -> obs://build.opensuse.org/home:plater

When really installing I obtain an error message: 
Retrieving package libliveMedia106-2022.04.26-66.4.x86_64                     
(3/5), 411.2 KiB (  1.2 MiB unpacked)
Retrieving: libliveMedia106-2022.04.26-66.4.x86_64.rpm
..................................................[not found]
File './x86_64/libliveMedia106-2022.04.26-66.4.x86_64.rpm' not found on medium
'https://download.opensuse.org/repositories/home:/plater/Tumbleweed/'
Abort, retry, ignore? [a/r/i/...? shows all options] (a): a

What to do?