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我嘗試啓動'padrino sample_blog'時遇到此錯誤。我安裝了'multi_json'和'atomic'寶石的更新版本，但我無法啓動博客，也不知道如何解決它，有什麼幫助？Padrino錯誤啓動sample_blog
：sample_blog用戶$ padrino開始
警告：未解決的規格寶石:: Specification.reset期間：
multi_json (~> 1.3)
atomic (>= 0)
警告：清理出未解決的規格。 如果這導致問題，請報告錯誤。
/usr/local/rvm/gems/ruby-1.9.3-p392/gems/padrino-core-0.9.21/lib/padrino-core/cli/base.rb:1:in`require'：無法加載這樣的文件 - 托爾（LoadError）
from /usr/local/rvm/gems/ruby-1.9.3-p392/gems/padrino-core-0.9.21/lib/padrino-core/cli/base.rb:1:in `<top (required)>'
from /usr/local/rvm/gems/ruby-1.9.3-p392/gems/padrino-core-0.9.21/bin/padrino:7:in `require'
from /usr/local/rvm/gems/ruby-1.9.3-p392/gems/padrino-core-0.9.21/bin/padrino:7:in `<top (required)>'
from /usr/local/rvm/gems/ruby-1.9.3-p392/bin/padrino:23:in `load'
from /usr/local/rvm/gems/ruby-1.9.3-p392/bin/padrino:23:in `<main>'
from /usr/local/rvm/gems/ruby-1.9.3-p392/bin/ruby_noexec_wrapper:14:in `eval'
from /usr/local/rvm/gems/ruby-1.9.3-p392/bin/ruby_noexec_wrapper:14:in `<main>'