I had same problem today, for me fix was to run npm install in katello folder. Not sure why but running npm install only in foreman folder didn’t helped
This seems to have done something, I now get 12:03:10 webpack.1 | webpack: Compiled successfully. in the bundle exec foreman start output, but my login screen still looks like this:
For the first Katello issue: install node 14 and all should work fine
For the second issue, where it seems like there is no css loaded:
Thanks to @evgeni there is a fix for it: