title: jekyll error building page related to kramdown parser
body: <p>Whenever I run the &quot;bundle exec jekyll serve&quot; it returns the error</p>
  <p>Dependency Error: Yikes! It looks like you don't have kramdown-parser-gfm 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 -- kramdown-parser-gfm' If you run into trouble, you can find helpful resources at <a href="https://jekyllrb.com/help/" rel="noreferrer">https://jekyllrb.com/help/</a>!<br />
  Liquid Exception: kramdown-parser-gfm in /_layouts/default.html
  ERROR: YOUR SITE COULD NOT BE BUILT:
  ------------------------------------
  kramdown-parser-gfm</p>
  <p>so, I tried &quot;gem install kramdown-parser-gfm&quot;, but it returns the same error after that.
  I also tried to remove and reinstall the jekyll and bundle, but it also didn't work.</p>
  <pre><code>jekyll version 3.9.0 Bundler version 2.1.4
  </code></pre>