'ActionDispatch::MiddlewareStack::Middleware#build': undefined method 'new' for an instance of String (NoMethodError)

[sufyaniqbaldev]

I have set up a new application with Devise and Apartment. I was facing an error
`.rvm/gems/ruby-3.4.9/gems/actionpack-8.1.3/lib/action_dispatch/middleware/stack.rb:44:in 'ActionDispatch::MiddlewareStack::Middleware#build': undefined method 'new' for an instance of String (NoMethodError)

    klass.new(app, *args, &block)
         ^^^^

Did you mean? next`

After hours of investigation, I found a simple issue. Just fixed on local, but don't know what will happen in production.
../.rvm/gems/ruby-3.4.9/gems/apartment-0.24.3/lib/apartment/railtie.rb

+46 line
if Rails.env.development?

  # Apartment::Reloader is middleware to initialize things properly on each request to dev
  initializer 'apartment.init' do |app|
    #**app.config.middleware.use "Apartment::Reloader"**

#changed to
app.config.middleware.use Apartment::Reloader
end

  # Overrides reload! to also call Apartment::Database.init as well so that the reloaded classes have the proper table_names
  console do
    require 'apartment/console'
  end
end