On 2026-01-23, Bob McGowan wrote: > Yes, I had files in /etc/apt/sources.list.d that were causing the problem. > > I'm not sure why or when they were created. > > I discovered them this morning and simply moved them out of the way and my > update/upgrade ran flawlessly.
Using files in /etc/apt/sources.list.d/ is a better way than using a single /etc/apt/sources.list : https://wiki.debian.org/SourcesList

