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NoMethodError (undefined method `arity') after upgrade to Ruby 3 and Rails 6.1 · Issue #85 · zendesk/property_sets · GitHub
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ruby 3.0.0: undefined method `arity' for · Issue #40957 · rails/rails · GitHub
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parameters on non-Ruby method with special arity will NPE · Issue #3040 · jruby/jruby · GitHub
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