Error on Rails 6.1 for Rails.application.class.parent_name.underscore

[quorak]

Steps to reproduce

1. upgrade to Rails 6.1
2. use mattermost exception_notifier (but probably any)
3. throw exception

Expected behavior

exception gets send to backend

Actual behavior

[2021-01-19T08:11:38.595375 #1]  WARN -- : An error occurred when sending a notification using 'mattermost' notifier.NoMethodError: undefined method `parent_name' for XXX::Application:Class
/usr/local/bundle/gems/railties-6.1.1/lib/rails/railtie.rb:209:in `method_missing'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notifier/modules/formatter.rb:114:in `rails_app_name'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notifier/modules/formatter.rb:17:in `initialize'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notifier/mattermost_notifier.rb:11:in `new'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notifier/mattermost_notifier.rb:11:in `call'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notifier.rb:162:in `fire_notification'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notifier.rb:71:in `block in notify_exception'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notifier.rb:69:in `each'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notifier.rb:69:in `notify_exception'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notification/rack.rb:59:in `rescue in call'
/usr/local/bundle/gems/exception_notification-4.4.3/lib/exception_notification/rack.rb:48:in `call'

System configuration

Rails version: 6.1
Ruby version: 2.7.1

[jmlacroix]

@quorak you're right, it also happens with a custom notifier.

@smartinez87 any plan on releasing an updated gem version or should I source from master for the time being?

Anyhow, thanks to both of you for your work in this! 🙏

[jaysonvirissimo]

Looks like this issue has already been addressed, so can be safely closed now.

cc @smartinez87