Require code from spree/core explicitly

app/controllers/spree/base_controller.rb

@@ -3,8 +3,8 @@
 require 'cancan'
 require 'spree/core/controller_helpers/auth'
 require 'spree/core/controller_helpers/respond_with'
-require 'spree/core/controller_helpers/common'
 require 'spree/core/controller_helpers/ssl'
+require 'spree/core/controller_helpers/common'
 
 module Spree
   class BaseController < ApplicationController

app/models/enterprise_group.rb

@@ -1,5 +1,6 @@
 require 'open_food_network/locking'
 require 'open_food_network/permalink_generator'
+require 'spree/core/s3_support'
 
 class EnterpriseGroup < ActiveRecord::Base
   include PermalinkGenerator

app/models/spree/gateway.rb

@@ -1,5 +1,8 @@
 # frozen_string_literal: true
 
+require 'concerns/payment_method_distributors'
+require 'spree/core/delegate_belongs_to'
+
 module Spree
   class Gateway < PaymentMethod
     include PaymentMethodDistributors

app/models/spree/payment_method.rb

@@ -1,5 +1,8 @@
 # frozen_string_literal: true
 
+require 'concerns/payment_method_distributors'
+require 'spree/core/calculated_adjustments'
+
 module Spree
   class PaymentMethod < ActiveRecord::Base
     include Spree::Core::CalculatedAdjustments

spec/models/spree/order_spec.rb

@@ -1,4 +1,5 @@
 require 'spec_helper'
+require 'spree/core/gateway_error'
 
 describe Spree::Order do
   include OpenFoodNetwork::EmailHelper