đź”´ Red popup in nomad-oasis web app

Hi!, I’ve got Nomad-Oasis Docker images up and running,

and I can log in to the Nomad server just fine. But when I try to use the main features—like PUBLISH → Uploads or PUBLISH → Datasets—I get a red error popup, and the page is stuck on “loading…” (see screenshots below).

I’ve only made a few minimal changes to my YAML and config files, and those worked on my Ubuntu setup. This issue is happening on RHEL. Has anyone run into that red popup before or have any tips on where I should start troubleshooting?