Comment out no-longer required options set by Rails 5.1 Upgrade in 2017:

cf. https://github.com/coderdojo-japan/coderdojo.jp/blame/main/config/initializers/new_framework_defaults_5_1.rb

Author: yasulab

config/initializers/new_framework_defaults_5_1.rb

@@ -7,7 +7,7 @@
 # Read the Guide for Upgrading Ruby on Rails for more info on each option.
 
 # Make `form_with` generate non-remote forms.
-Rails.application.config.action_view.form_with_generates_remote_forms = false
+#Rails.application.config.action_view.form_with_generates_remote_forms = false
 
 # Unknown asset fallback will return the path passed in when the given
 # asset is not present in the asset pipeline.