Crash on loading

I'm trying to use this plugin.

I've added the two lines to the config/puma/production.rb as we only want to record data in the one environment

activate_control_app
plugin :cloudwatch

But this causes the puma workers to not start with an error like:

[5484] ! Unable to start worker
[5484] undefined method ignored?' for an instance of Gem::Specification
[5484] /home/ubuntu/.rbenv/versions/3.3.5/lib/ruby/3.3.0/rubygems/specification.rb:2121:in method_missing'

I have gem "puma-cloudwatch" in the Gemfile and version 0.5.2 is being installed according to the Gemfile.lock

Reproduce the failure with the two entries in config/puma/production.rb and the puma-cloudwatch 0.5.2 dependency recorded in Gemfile.lock. Start with the worker-startup error and the RubyGems specification.rb:2121 trace, then determine why plugin loading calls ignored? on Gem::Specification. Done means Puma workers start successfully with the plugin enabled in production.

Written by the indexing model from the issue text.