DevApp error "{ionic-plugin-name} plugin not installed" in command console, but works in browser and emulator


I’m writing a Ionic App that uses several plugins (example Geolocation, which are supported by DevApp -

Testing via the browser works fine.
Testing via Emulator also works fine.

When I test the app via DevApp, the ionic console is logging that the plugins are not installed.

Anyone know how to resolve this?