title: Unable to install logstash elapsed plugin in Windows 10
body: <p>I have logstash 5.5 and when I run</p>
  
  <pre><code>./logstash-plugin install logstash-filter-elapsed
  </code></pre>
  
  <p>I get the error message</p>
  
  <pre><code>Error Bundler::InstallError, retrying 1/10
  An error occurred while installing logstash-core (5.5.0), and Bundler cannot continue.
  Make sure that `gem install logstash-core -v '5.5.0'` succeeds before bundling.
  </code></pre>
  
  <p>As per the logstash guide, the only requirement is jdk 8 and I have properly installed it and set my JAVA_HOME environment variable.</p>
  
  <p>I've already tried so many ways including installing ruby and installing logstash-core (error again, cannot find the gem).</p>
  
  <p>I'm running Windows 10. Any ideas on why this happens and how to resolve it?</p>
  
  <p>Many thanks.</p>