add optional sidekiq for background jobs

config/environments/development.rb

@@ -45,6 +45,8 @@ Rails.application.configure do
     config.cache_store = :null_store
   end
 
+  config.active_job.queue_adapter = :sidekiq if defined?(Sidekiq)
+
   # Store uploaded files on the local file system (see config/storage.yml for options).
   config.active_storage.service = :disk
   config.active_storage.resolve_model_to_route = :rails_storage_proxy