尝试运行 rake db:migrate 我得到:
$ rake db:migrate
(in /home/user/domains/staging)
log level debug
Missing these required gems:
haml ~> 3.1.4
htmlentities
fastercsv
You're running:
ruby 1.8.7.72 at /usr/bin/ruby1.8
rubygems 1.3.7 at /home/user/.gem/ruby/1.8, /usr/lib/ruby/gems/1.8
Run `rake gems:install` to install the missing gems.
rake aborted!
no such file to load -- json
我有两台服务器,它们都是通过 git 存储库更新的。在一台服务器上一切正常,在另一台服务器上出现上述错误。
这是怎么回事?