I want to use the Maily Herald as an Advanced email processing solution for Ruby on Rails applications. I have cloned the a copy of the application and have setup up. The issue though with the application is that the maintenance for the application has been poor recently as the last update was made in April 6, 2018.
However, I have been able to setup it up with Ruby on Rails 5.2.3, although it has thrown a lot of errors which I have solved a lot of them from help online. But I am currently faced with a Redis issue which I can't tell how to solve it.
I am trying to access the web interface of Maily Herald, but it throws the error
NoMethodError in MailyHerald::Webui::Dashboard#index .
I have tried to solve it but no solution yet. The file is in HAML not ERB. I have attached a screenshot of the error as well. Any form of help will be highly appreciated.