“Please point sidekiq to a Rails 3 application or a Ruby file to load your worker classes with -r DIR|FILE.”

I received this error while attempting to use Sidekiq in a Sinatra app. To solve this problem, use the -r option to point Sidekiq to your main Sinatra file.

`sidekiq: bundle exec sidekiq -r ./app.rb`

The -r option is also used by pry to preload dependencies.

pry -r ./app.rb gives you access to all our your methods in app.rb without the need to require it via console.