Error launching navigator: plugin_not_installed

[ghost]

I am trying the user to a maps app on their device using launch-navigator for ionic. I have installed the Cordova plugin using ionic cordova plugin add uk.co.workingedge.phonegap.plugin.launchnavigator, however when i try and run function i get

Error launching navigator: plugin_not_installed

In my config.xml, i do have the plugin stated and also included it in app.modules.ts

locations.ts code

this.platform.ready().then(()=>{
  this.launchNavigator.navigate("London, UK")
    .then(
      success => alert('Launched navigator'),
      error => alert('Error launching navigator: ' + error)
    );
});

[kefimo]

any news?