Jiawenma

``` frankdeMacBook-Air:housepricing Jiawen$ bundle exec rake db:migrate /Users/Jiawen/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/rake-11.2.2/lib/rake/ext/fixnum.rb:4: warning: constant ::Fixnum is deprecated /Users/Jiawen/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/sprockets-3.6.0/lib/sprockets/processor_utils.rb:110: warning: constant ::Fixnum is deprecated /Users/Jiawen/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/sprockets-3.6.0/lib/sprockets/processor_utils.rb:111: warning: constant ::Bignum is deprecated /Users/Jiawen/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/concurrent-ruby-1.0.2/lib/concurrent/map.rb:206: warning: constant ::Fixnum is...

照它上面做了，但是启动服务器的时候又报错 ``` stacklevel too deep（system stack error）=> Rails 4.2.5.2 application starting in development on http://localhost:4000 => Run `rails server -h` for more startup options => Ctrl-C to shutdown server /Users/Jiawen/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/activesupport-4.2.5.2/lib/active_support/core_ext/numeric/conversions.rb:121:...