I suspect its got something to do with the systemd service definition. You may have to tweak the parameters under “optional security settings” to make it work. Or maybe you could start radicale manually from the command line, just for testing, and see if that works
I don’t know if you’re using debian but I encountered the same issue. The wiki has instructions to fix this (section create essential directories):
I’ve just set up Wireguard, so I can access my home network from everywhere, but the old laptop that I wanted to use as a server has just quit. So now I have to find a different machine
I use k3b for ripping and kid3 for editing metadata
I also use Rhythmbox, the UI is clean and simple. Other music players either are too complicated (UI has too much clutter, play queues) or want to automatically import all audio files in my home directory into the library, which is annoying. But to be fair, I haven’t tried a lot of other players, because I’m happy using Rhythmbox.
Can you maybe give us a ls -Al of /var/lib/radicale and /var/lib/radicale/collections to double check the permissions? I just looked at the systemd documentation and the service definition looks ok.