下载安装了 rubymine 搭建好项目后 Debug 不能使用

报错如下：

/Users/.rvm/rubies/ruby-2.2.1/bin/ruby -e at_exit{sleep(1)};$stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /Users/.rvm/gems/ruby-2.2.1@global/gems/ruby-debug-ide-0.4.28/bin/rdebug-ide --disable-int-handler --evaluation-timeout 10 --rubymine-protocol-extensions --port 60730 --dispatcher-port 60731 -- /Users/wwwspace/business_analysis/bin/rails server -b 0.0.0.0 -p 3000 -e development
Fast Debugger (ruby-debug-ide 0.4.28, debase 0.1.3.beta1) listens on 127.0.0.1:60730
Uncaught exception: cannot load such file -- bundler/setup
    /Users/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    /Users/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    /Users/wwwspace/business_analysis/config/boot.rb:4:in `<top (required)>'
    /Users/wwwspace/business_analysis/bin/rails:3:in `require_relative'
    /Users/wwwspace/business_analysis/bin/rails:3:in `<top (required)>'
    /Users/.rvm/gems/ruby-2.2.1@global/gems/ruby-debug-ide-0.4.28/bin/rdebug-ide:121:in `<top (required)>'

Process finished with exit code 0

好久都没解决，求指点