@Flox Initially, it wouldn’t install for me. I couldn’t figure out why, and this is all I got in the logs:
ERROR [storageadmin.views.rockon:82] Rockon (Node.js app from git) is in pending state but there is no pending or failed task for it.
I renamed it, which I think is what lead to worse errors, because it was still trying to install a rock-on that no longer existed. That whole fiasco is at Rock-ons Web UI can fail to load due to a failed task
Being able to see the console output from the rock-on might be helpful, but I can’t tell if it even got that far. I still have no idea what the actual problem was, but when I tried again a couple of days later, it worked.