我需要做什么来修复这个错误
This installation of RMagick was configured with ImageMagick 6.6.9 but ImageMagick 6.7.5-10 is in use.
app/uploaders/avatar_uploader.rb:2:in include'
app/uploaders/avatar_uploader.rb:2:in
' app/uploaders/avatar_uploader.rb:1:in <top (required)>'
app/models/user.rb:2:in
' app/models/user.rb:1:in <top (required)>'
app/controllers/users_controller.rb:1:in
'
加载以下文件时发生此错误:RMagick RMagick2.so