500 Internal Server Error

Your bundle is locked to rake (11.2.2), but that version could not be found in any of the sources listed in your Gemfile. If you haven't changed sources, that means the author of rake (11.2.2) has removed it. You'll need to update your bundle to a different version of rake (11.2.2) that hasn't been removed in order to install. (Bundler::GemNotFound)

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/home/ukai/public_html/u/diary/misc/lib/bundler-1.13.1/lib/bundler/definition.rb:235:in `specs_for'
/home/ukai/public_html/u/diary/misc/lib/bundler-1.13.1/lib/bundler/definition.rb:224:in `requested_specs'
/home/ukai/public_html/u/diary/misc/lib/bundler-1.13.1/lib/bundler/runtime.rb:118:in `block in definition_method'
/home/ukai/public_html/u/diary/misc/lib/bundler-1.13.1/lib/bundler/runtime.rb:19:in `setup'
/home/ukai/public_html/u/diary/misc/lib/bundler-1.13.1/lib/bundler.rb:99:in `setup'
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/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
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/home/ukai/public_html/u/diary/lib/tdiary/environment.rb:8:in `<top (required)>'
/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
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/home/ukai/public_html/u/diary/lib/tdiary.rb:25:in `<top (required)>'
/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
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/home/ukai/public_html/u/diary/index.rb:18:in `<main>'