FIXED: Erro inicialização do sistema.

 - Atualizada gem 'rails-env';
 - Modificado parâmetros de inicialização;

Gemfile

@@ -46,7 +46,7 @@ group :development, :test do
   gem 'factory_girl_rails'
   gem 'faker'
   gem 'mina'
-  gem 'rspec-rails', require: 'rspec/rails'
+  gem 'rspec-rails'
   gem 'selenium-webdriver'
   gem 'shoulda-matchers'
   gem 'spring'

Gemfile.lock

@@ -81,7 +81,7 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
-    carrierwave (0.11.1)
+    carrierwave (0.11.2)
       activemodel (>= 3.2.0)
       activesupport (>= 3.2.0)
       json (>= 1.7)

config/initializers/active_mailer.rb

@@ -1,4 +1,4 @@
-Rails.env.on(:any) do |config|
+Rails.env.on(:any) do
   # config mailer
   config.action_mailer.default_url_options = { host: ENV['DOMAIN'] }
   config.action_mailer.raise_delivery_errors = true
@@ -14,7 +14,7 @@
     :openssl_verify_mode => 'none'
   }
 end
-Rails.env.on(:development) do |config|
+Rails.env.on(:development) do
   # Send email in development mode.
   config.action_mailer.perform_deliveries = true
 end

config/initializers/devise.rb

@@ -258,7 +258,7 @@
   # config.omniauth_path_prefix = '/my_engine/users/auth'
 end
 
-Rails.env.on(:any) do |config|
+Rails.env.on(:any) do
   # Configuration for layouts
   config.to_prepare do
    Devise::SessionsController.layout false

config/initializers/generators.rb

@@ -1,4 +1,4 @@
-Rails.env.on(:any) do |config|
+Rails.env.on(:any) do
   # Disabel Generate assets and helpes
   config.generators.assets = false
   config.generators.helper = false

config/initializers/time_zone.rb

@@ -1,4 +1,4 @@
-Rails.env.on(:any) do |config|
+Rails.env.on(:any) do
   # Configuration default for time zone
   config.time_zone = 'Brasilia'
   config.i18n.default_locale = :'pt-BR'