The de-facto debugger for Rails is Byebug. It works with Rails were things like Pry fall short, comes recommended by the core Rails team, and is even bundled with Rails. This article will walk you through getting set up with basic Debugging Ruby on Rails With byebug. The debugger permits the ability to understand what is going on inside a Ruby program while it executes and offers many of the traditional debugging features such as: Stepping: Running your program one line at a time.Breaking: Pausing the program at some event or specified instruction, to examine the current state.Evaluating: Basic REPL functionality, although pry does a better job at that.Tracking: Keeping track of the different values of your variables or the different lines executed by your program. Requirements Required: