I've seen this while using the 2.1.3 container, but am pretty sure this would apply to other versions and deployments too when using Puma 5.0:

=> Booting Puma
=> Rails 6.0.3.3 application starting in production 
=> Run `rails server --help` for more startup options
2020-09-25T07:54:30 [W|app|] Creating scope :completer_scope. Overwriting existing method Location.completer_scope.
2020-09-25T07:54:30 [W|app|] Creating scope :completer_scope. Overwriting existing method Organization.completer_scope.
2020-09-25T07:54:34 [I|app|] No new seed file updates found. Skipping
Exiting
bundler: failed to load command: bin/rails (bin/rails)
LoadError: cannot load such file -- /home/foreman/vendor/ruby/2.6.0/gems/puma-5.0.0/lib/puma/puma_http11