Dependency Error: Yikes! It looks like you don't have pygments or one of its dependencies installed

[hideokamoto]

Expected behavior

Start run jekyll following commands.

$ bundle install
$ ruby regenerate.rb
$ bundle exec jekyll serve --watch

Actual behavior

Happen following error.

  Dependency Error: Yikes! It looks like you don't have pygments or one of its dependencies installed. In order to use Jekyll as currently configured, you'll need to install this gem. The full error message from Ruby is: 'cannot load such file -- pygments' If you run into trouble, you can find helpful resources at http://jekyllrb.com/help/! 
  Conversion error: Jekyll::Converters::Markdown encountered an error while converting 'changes-beta-1.md':
                    pygments
             ERROR: YOUR SITE COULD NOT BE BUILT:
                    ------------------------------------
                    pygments

[hideokamoto]

#12
Thanks to marge 👍