title: Ruby 2.4.1 - warning: constant ::Fixnum is deprecated
body: <p>I'm new to StackOverflow and Rails, so I am hoping this is not too naive a question. I am trying to run my application locally using bin/rails server. When I type that, I receive the following trace:</p>
  
  <pre><code>=&gt; Booting Puma
  =&gt; Rails 4.2.5 application starting in development on http://localhost:3000
  =&gt; Run `rails server -h` for more startup options
  =&gt; Ctrl-C to shutdown server
  
      /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Fixnum is deprecated
      /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Bignum is deprecated
      Exiting
      /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:125:in `block (2 levels) in &lt;class:Numeric&gt;': stack level too deep (SystemStackError)
          from /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in &lt;class:Numeric&gt;'
          from /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in &lt;class:Numeric&gt;'
          from /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in &lt;class:Numeric&gt;'
          from /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in &lt;class:Numeric&gt;'
          from /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in &lt;class:Numeric&gt;'
          from /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in &lt;class:Numeric&gt;'
          from /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in &lt;class:Numeric&gt;'
          from /Users/name/.rvm/gems/ruby-2.4.1/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:131:in `block (2 levels) in &lt;class:Numeric&gt;'
           ... 5603 levels...
          from /Users/name/.rvm/rubies/ruby-2.4.1/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:68:in `require'
          from /Users/name/spending-tracker-master/bin/spring:13:in `&lt;top (required)&gt;'
          from bin/rails:3:in `load'
          from bin/rails:3:in `&lt;main&gt;'
  </code></pre>
  
  <p>I do not believe I can ignore it as stated here (<a href="https://stackoverflow.com/questions/41463999/warning-constant-fixnum-is-deprecated-when-generating-new-model">warning: constant ::Fixnum is deprecated When generating new model</a>) because it won't open the application locally. </p>
  
  <p>Could someone help?</p>
  
  <p>Thank you!
  Ben</p>