title: bundle exec jekyll serve > Dependency Error: Yikes! It looks like you don't have jekyll-commonmark-ghpages
body: <p>I'm trying to run <code>bundle exec jekyll build</code> but I get the below output.</p>
  
  <pre><code>Configuration file: /path/_config.yml
    Dependency Error: Yikes! It looks like you don't have jekyll-commonmark-ghpages 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 -- rouge' If you run into trouble, you can find helpful resources at https://jekyllrb.com/help/! 
  jekyll 3.8.5 | Error:  jekyll-commonmark-ghpages
  
  </code></pre>
  
  <p>I'm editing my site which is hosted on on GitHub pages. This process with jekyll has worked before but I haven't touched it for a long time.</p>
  
  <p>I've tried to delete the Gemfile.lock and bundle install, I still get the same error though. I'm running Kubuntu 19.04, ruby 2.5.5p157 (2019-03-15 revision 67260) [x86_64-linux-gnu].</p>
  
  <p>My bundle show output:</p>
  
  <pre><code>Gems included by the bundle:
    * activesupport (4.2.11.1)
    * addressable (2.6.0)
    * bundler (2.0.2)
    * coffee-script (2.4.1)
    * coffee-script-source (1.11.1)
    * colorator (1.1.0)
    * commonmarker (0.17.13)
    * concurrent-ruby (1.1.5)
    * dnsruby (1.61.2)
    * em-websocket (0.5.1)
    * ethon (0.12.0)
    * eventmachine (1.2.7)
    * execjs (2.7.0)
    * faraday (0.15.4)
    * ffi (1.11.1)
    * forwardable-extended (2.6.0)
    * gemoji (3.0.1)
    * github-pages (198)
    * github-pages-health-check (1.16.1)
    * html-pipeline (2.11.1)
    * http_parser.rb (0.6.0)
    * i18n (0.9.5)
    * jekyll (3.8.5)
    * jekyll-avatar (0.6.0)
    * jekyll-coffeescript (1.1.1)
    * jekyll-commonmark (1.3.1)
    * jekyll-commonmark-ghpages (0.1.5)
    * jekyll-default-layout (0.1.4)
    * jekyll-feed (0.11.0)
    * jekyll-gist (1.5.0)
    * jekyll-github-metadata (2.12.1)
    * jekyll-mentions (1.4.1)
    * jekyll-optional-front-matter (0.3.0)
    * jekyll-paginate (1.1.0)
    * jekyll-readme-index (0.2.0)
    * jekyll-redirect-from (0.14.0)
    * jekyll-relative-links (0.6.0)
    * jekyll-remote-theme (0.3.1)
    * jekyll-sass-converter (1.5.2)
    * jekyll-seo-tag (2.5.0)
    * jekyll-sitemap (1.2.0)
    * jekyll-swiss (0.4.0)
    * jekyll-theme-architect (0.1.1)
    * jekyll-theme-cayman (0.1.1)
    * jekyll-theme-dinky (0.1.1)
    * jekyll-theme-hacker (0.1.1)
    * jekyll-theme-leap-day (0.1.1)
    * jekyll-theme-merlot (0.1.1)
    * jekyll-theme-midnight (0.1.1)
    * jekyll-theme-minimal (0.1.1)
    * jekyll-theme-modernist (0.1.1)
    * jekyll-theme-primer (0.5.3)
    * jekyll-theme-slate (0.1.1)
    * jekyll-theme-tactile (0.1.1)
    * jekyll-theme-time-machine (0.1.1)
    * jekyll-titles-from-headings (0.5.1)
    * jekyll-watch (2.2.1)
    * jemoji (0.10.2)
    * kramdown (1.17.0)
    * liquid (4.0.0)
    * listen (3.1.5)
    * mercenary (0.3.6)
    * mini_portile2 (2.4.0)
    * minima (2.5.0)
    * minitest (5.11.3)
    * multipart-post (2.1.1)
    * nokogiri (1.10.3)
    * octokit (4.14.0)
    * pathutil (0.16.2)
    * public_suffix (3.1.1)
    * rb-fsevent (0.10.3)
    * rb-inotify (0.10.0)
    * rouge (2.2.1)
    * ruby-enum (0.7.2)
    * ruby_dep (1.5.0)
    * rubyzip (1.2.3)
    * safe_yaml (1.0.5)
    * sass (3.7.4)
    * sass-listen (4.0.0)
    * sawyer (0.8.2)
    * terminal-table (1.8.0)
    * thread_safe (0.3.6)
    * typhoeus (1.3.1)
    * tzinfo (1.2.5)
    * unicode-display_width (1.6.0)
  
  </code></pre>
  
  <p>Expected result is for jekyll is successfully serve the site so I can view it locally on my machine. Let me know if you need more information.</p>