+# Guard against deployments with old-style application.yml configurations
+# Otherwise, admins might not be aware that they are now silently ignored
+# and major problems could occur
+# rubocop:disable Rails/Output, Rails/Exit
+if File.exist?(Rails.root.join("config", "application.yml"))
+ puts "The config/application.yml file is no longer supported."
+ puts ""
+ puts "Default settings are now found in config/settings.yml and you"
+ puts "can override these in config/settings.local.yml."
+ puts ""
+ puts "To prevent unexpected behaviour, please copy any custom"
+ puts "settings to config/settings.local.yml and then remove"
+ puts "your config/application.yml file."
+ exit!
+end
+# rubocop:enable Rails/Output, Rails/Exit
+