Ensure that better errors not called if undefined

Author: rsmithlal

spec/dummy/config/environments/development.rb

@@ -85,5 +85,11 @@
   # Uncomment if you wish to allow Action Cable access from any origin.
   # config.action_cable.disable_request_forgery_protection = true
 
-  BetterErrors::Middleware.allow_ip! '0.0.0.0/0'
+  BetterErrors::Middleware.allow_ip! '0.0.0.0/0' if defined?(BetterErrors)
+
+  if defined?(FactoryBot)
+    config.to_prepare do
+      FactoryBot.definition_file_paths << File.join(BetterTogether::Engine.root, 'spec', 'factories')
+    end
+  end
 end