Have you ever wanted to be one step ahead of your users, and be notified of any unwanted exception before anyone? If so, read this article to configure your rails application in just a few steps.First, we are going to need two gems:Exception Notification, provides a set of notifiers for sending notifications when errors occur in a Rack/Rails applicationSlack-Notifier, a simple wrapper to send notifications to Slack webhooks.Install them as you would do with any other gem. In my case, I add them to the Gemfile and then run bundle install.