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POCan't run rails server after accidentally running $ gem update --system
 

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  1. POCan't run rails server after accidentally running $ gem update --system
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    <p>I ran <code>gem update --system</code> thinking it would solve a problem I was having, and now I can't run <code>rails server</code>. It won't load and instead, I keep getting the following. Can someone tell me how to undo this and revert back to before I ran the update?</p> <p>I've already ran <code>git checkout</code>, but the problem persists...</p> <pre><code>/usr/local/rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/rubygems_integration.rb:187:in `stub_source_index170': uninitialized constant Gem::SourceIndex (NameError) from /usr/local/rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/rubygems_integration.rb:353:in `stub_rubygems' from /usr/local/rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/rubygems_integration.rb:250:in `replace_entrypoints' from /usr/local/rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler/runtime.rb:14:in `setup' from /usr/local/rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.5/lib/bundler.rb:107:in `setup' from /usr/local/rvm/gems/ruby-1.9.3-p194@global/gems/rubygems-bundler-1.0.7/lib/rubygems-bundler/noexec.rb:66:in `setup' from /usr/local/rvm/gems/ruby-1.9.3-p194@global/gems/rubygems-bundler-1.0.7/lib/rubygems-bundler/noexec.rb:78:in `&lt;top (required)&gt;' from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb:110:in `require' from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb:110:in `rescue in require' from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb:35:in `require' from /usr/local/rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:9:in `&lt;main&gt;' </code></pre>
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