Question

/usr/share/ruby-rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/i686-linux/psych.so: warning:       already initialized constant ANY
/usr/share/ruby-rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/i686-linux/psych.so: warning: already initialized constant UTF8
/usr/share/ruby-rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/i686-linux/psych.so: warning: already initialized constant UTF16LE
/usr/share/ruby-rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/i686-linux/psych.so: warning: already initialized constant UTF16BE
/usr/share/ruby-rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/psych/nodes/stream.rb:12: warning: already initialized constant ANY
/usr/share/ruby-rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/psych/nodes/stream.rb:15: warning: already initialized constant UTF8
/usr/share/ruby-rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/psych/nodes/stream.rb:18: warning: already initialized constant UTF16LE
/usr/share/ruby-rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/psych/nodes/stream.rb:21: warning: already initialized constant UTF16BE

我在创建新的rails项目后第一次启动rails服务器时出现此错误。任何人都可以帮助我摆脱这个

Answer 1

对我来说，修复只是做gem uninstall psych。

Answer 2

也许所描述的解决方案on this gist会有所帮助：

rvm use 1.9.3
gem uninstall psych
gem install psych

在rails警告：已初始化常量

2 个答案: