Fix user.rb, applicaiton.rb and routes.rb

app/models/user.rb

@@ -48,7 +48,7 @@ class User < ActiveRecord::Base
 
   attribute :lastvisit, :datetime, default: Time.now.utc
 
-  belongs_to :team, :optional => true, :optional => true
+  belongs_to :team, :optional => true
   has_one :profile, :dependent => :destroy
   has_many :bans, :dependent => :destroy
   has_many :articles, :dependent => :destroy

config/application.rb

@@ -14,7 +14,7 @@ module Ensl
     config.exceptions_app = self.routes
 
     # Load Rails 5
-    config.load_defaults 5.0
+    # config.load_defaults 5.0
 
     # Additional assets
     config.assets.precompile += ["themes/*/theme.css", "themes/*/errors.css"]

config/routes.rb

@@ -1,5 +1,5 @@
 Ensl::Application.routes.draw do
-  if not Rails.env.development?
+  if Rails.env.production?
     %w(403 404 422 500).each do |code|
       get code, to: "errors#show", code: code
     end