title: JMeter - Failed to load the plugin manager
body: <p>I am trying to install a plugin from the plugin manager and I did the installation by downloading a file and kept in the lib\ext folder and restarted the JMeter and I clicked on the option from the tools menu and clicked on the plugins manager it shows an error.</p>
  <blockquote>
  <blockquote>
  <p>javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
  at sun.security.ssl.Alerts.getSSLException(Unknown Source)</p>
  </blockquote>
  </blockquote>
  <p>For the screenshot please follow to this link</p>
  <p><a href="https://stackoverflow.com/questions/42757131/ssl-error-when-opening-plugin-manager-in-jmeter-3">SSL error when opening plugin manager in Jmeter 3</a></p>