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Error running Rails with Ruby 2.4.0

Ruby • Asked by Menj Villalobos
[Menj]~/RubymineProjects/myapp2$ rails s
/Users/Menj/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.1/lib/active_support/xml_mini.rb:51: warning: constant ::Fixnum is deprecated
/Users/Menj/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.1/lib/active_support/xml_mini.rb:52: warning: constant ::Bignum is deprecated
=> Booting Puma
=> Rails 5.0.1 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
/Users/Menj/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.1/lib/active_support/core_ext/numeric/conversions.rb:138: warning: constant ::Fixnum is deprecated

Hi anyone encountered same issue?


Hi, It's not an error. Just deprecated warning.


@Menj Villalobos this is not an error. It's not blocking your rails app, nor preventing it from starting. This is just a deprecation message.

The question is more to know if Rails 5.0.2 or is going to address this by replace all the Fixnum and Bignum by their new correct type in Ruby 2.4



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