Rubyonrails 加载常量时自动加载常量时检测到循环依赖

首先:我在谷歌上搜索并使用了这里的搜索，找到了相同错误的答案，但设置不同.也许我弄坏了不一样的东西；)

错误:

RuntimeError at /admin/users
Circular dependency detected while autoloading constant Admin::UsersController

struct 是:

App => controllers => admin => users_controller.rb

路由:

namespace :admin do
  resources :stuff
  resources :users
end

用户控制器:

class UsersController < Admin::BaseController
  def new
    #code
  end

  def create
    #code
  end

  def index
    #code
  end

  private

  def user_params
   #code
  end
end

管理基地控制器

class Admin::BaseController < ApplicationController
  layout 'admin'
  before_filter :require_login
end

使用:Rails 4.1.4、Ruby 2.1.2

谢谢你的帮助！

编辑:

发展rb

Rails.application.configure do
 config.cache_classes = false
 config.eager_load = false
 config.consider_all_requests_local       = true
 config.action_controller.perform_caching = false
 config.action_mailer.raise_delivery_errors = false
 config.active_support.deprecation = :log
 config.active_record.migration_error = :page_load
 config.assets.debug = true
 config.assets.raise_runtime_errors = true
end