Is ugc plugin for unreal 5 working?

I could compile debellica’s corrected fork with a binary version of Unreal 5.2.1, but the mod loading doesn’t seem to work.

What I did was open the project in Unreal 5.2.1, package the project, create a mod, add a map to it, then package the mod, copy it into the aforementioned packaged build of the project as described in the usage guide, and lastly run the packaged build, but the mod doesn’t show up as a UGC package like it’s supposed to.

This here is the entire packaged content of my example mod, containing a grand total of one map and nothing else:

This is where I start the game from:

And as you can see, the game fails to recognize this mod:

Did I perhaps make a mistake somewhere?