Not yet complete.
Either ommit all -testing repositories from pacman or add some empty db/file database files in the cloud server, otherwise the first error stops pacman.

I suspect adding empty db and file files is the easiest option, but I must be the only person in the known universe using -testing repositories, including you, the person asking for testing.

I would also recommend a simpler masked link for https://cloud.server.obarun.org/browse/
something like pkg.obarun.org or pkgs.obarun.org or obarun.org/packages if you want to maintain an Arch like parallelism. Probably the last matches the pattern of ob.../software ...
Then update the link on the top bar of the website and update that module that says navigation to include it in
https://web.obarun.org/index.php?id=52