Problems running Oxidized on Rocky Linux 9.5

[MedicoreV8]

The documentation mentions CentOS 6 and 7 which are ancient by now.
I've been running Oxidized on Ubuntu 24.4 with succes, however to bring Oxidized into Production I have to conform to Rocky Linux 9.

I've tried installing oxidized, the documentation wasn't helpfull. I could share what is going wrong during the proces but with a lot of pain I managed to get Ruby and gem install oxidized and oxidized-web.
However, whenever I try to run oxidized, I get the following error:

[oxidizer@localhost ~]$ oxidized
Ignoring debug-1.9.1 because its extensions are not built. Try: gem pristine debug --version 1.9.1
Ignoring racc-1.7.3 because its extensions are not built. Try: gem pristine racc --version 1.7.3
Ignoring rbs-3.4.0 because its extensions are not built. Try: gem pristine rbs --version 3.4.0
/usr/share/rubygems/rubygems.rb:278:in `find_spec_for_exe': can't find gem oxidized (>= 0.a) with executable oxidized (Gem::GemNotFoundException)
        from /usr/share/rubygems/rubygems.rb:297:in `activate_bin_path'
        from /usr/local/bin/oxidized:25:in `<main>'

Now this is still an A environment, not yet P.
But I'd like to get the installation process nailed down before I move to P.

also:

[oxidizer@localhost ~]$ ruby -v
ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-linux]

[Roc3912]

I have installed it on rockylinux9.5 and the experience is very good, no other problems occur