title: Error : Failed to fetch cordova plugin
body: <p>Installing &quot;cordova-plugin-opentokjs&quot; for android
  Failed to install 'cordova-plugin-opentokjs':</p>
  <blockquote>
  <p>CordovaError: Failed to fetch plugin cordova-plugin-crosswalk-webview via registry.</p>
  <p>Probably this is either a connection problem, or plugin spec is incorrect.</p>
  <p>Check your connection and plugin name/version/URL.</p>
  <p>Error: npm: Command failed with exit code 1 Error</p>
  </blockquote>
  <p>Help me to solve this issue?</p>