Can't run syslog.rb - cannot load such file -- asetus (LoadError)

[maddog-nn]

Hello. I've created systemd unit for syslog.rb script:

[Unit]
Description=Oxidized Syslog hook
After=network-oxidized.service
Wants=network-online.target
 
[Service]
ExecStart=/usr/local/rvm/gems/ruby-3.0.6/gems/oxidized-0.29.1/extra/syslog.rb
KillSignal=SIGKILL
Restart=on-failure
RestartSec=300s
 
[Install]
WantedBy=multi-user.target 

This works fine on ubuntu but now i try to use this approach on almalinux 8 and getting next problem:

Apr 16 11:07:36 oxidized01 syslog.rb[2542]: /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in 'require': cannot load such file -- asetus (LoadError)
Apr 16 11:07:36 oxidized01 syslog.rb[2542]: #011from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in 'require'
Apr 16 11:07:36 oxidized01 syslog.rb[2542]: #011from /usr/local/rvm/gems/ruby-3.0.6/gems/oxidized-0.29.1/extra/rest_client.rb:6:in '<class:RestClient>'
Apr 16 11:07:36 oxidized01 syslog.rb[2542]: #011from /usr/local/rvm/gems/ruby-3.0.6/gems/oxidized-0.29.1/extra/rest_client.rb:2:in '<module:Oxidized>'
Apr 16 11:07:36 oxidized01 syslog.rb[2542]: #011from /usr/local/rvm/gems/ruby-3.0.6/gems/oxidized-0.29.1/extra/rest_client.rb:1:in '<top (required)>'
Apr 16 11:07:36 oxidized01 syslog.rb[2542]: #011from /usr/local/rvm/gems/ruby-3.0.6/gems/oxidized-0.29.1/extra/syslog.rb:27:in 'require_relative'
Apr 16 11:07:36 oxidized01 syslog.rb[2542]: #011from /usr/local/rvm/gems/ruby-3.0.6/gems/oxidized-0.29.1/extra/syslog.rb:27:in '<main>'
Apr 16 11:07:36 oxidized01 systemd[1]: syslog-oxidized.service: Main process exited, code=exited, status=1/FAILURE
Apr 16 11:07:36 oxidized01 systemd[1]: syslog-oxidized.service: Failed with result 'exit-code'.

but if I run script like ruby /usr/local/rvm/gems/ruby-3.0.6/gems/oxidized-0.29.1/extra/syslog.rb it works without any issues.

[root@oxidized01 ~]# gem list | grep asetus
asetus (0.4.0)
[root@oxidized01 ~]# gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 3.5.9
  - RUBY VERSION: 3.0.6 (2023-03-30 patchlevel 216) [x86_64-linux]
  - INSTALLATION DIRECTORY: /usr/local/rvm/gems/ruby-3.0.6
  - USER INSTALLATION DIRECTORY: /root/.gem/ruby/3.0.0
  - RUBY EXECUTABLE: /usr/local/rvm/rubies/ruby-3.0.6/bin/ruby
  - GIT EXECUTABLE: /usr/bin/git
  - EXECUTABLE DIRECTORY: /usr/local/rvm/gems/ruby-3.0.6/bin
  - SPEC CACHE DIRECTORY: /root/.gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: /usr/local/rvm/rubies/ruby-3.0.6/etc
  - RUBYGEMS PLATFORMS:
     - ruby
     - x86_64-linux
  - GEM PATHS:
     - /usr/local/rvm/gems/ruby-3.0.6
     - /usr/local/rvm/rubies/ruby-3.0.6/lib/ruby/gems/3.0.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => true
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /usr/local/rvm/gems/ruby-3.0.6/bin
     - /usr/local/rvm/gems/ruby-3.0.6@global/bin
     - /usr/local/rvm/rubies/ruby-3.0.6/bin
     - /usr/local/sbin
     - /usr/local/bin
     - /usr/sbin
     - /usr/bin
     - /usr/local/rvm/bin
     - /root/bin
[root@oxidized01 ~]#