cannot load such file — rack/handler/puma

Question

My setup and the error

I get an error when I start my Sinatra application with rackup and puma. My config.ru file looks like this:

#\\         


        

Answer 1

Try to be sure you have

require "rack/handler/puma"

This is one that

Rack::Handler::Puma.run

needs.

Play with this http://gabebw.com/blog/2015/08/10/advanced-rack