Permissions in config.xml

I have made an app that uses geolocation. It works perfectly as a PWA. It also compiles as an apk using VoltBuilder, but the apk fails because it does not have location permissions. If I add

to config.xml VoltBuilder tells me that there is a “Parse Error in config.xml: unbound prefix: line 11, column 4”
This line is the FINE_LOCATION permission line in the VoltBuilder config.xml. So what is missing? What else do I need to do. Appologies for being an amateur.
Thanks, Graham

The solution might be to use the geolocation plugin:

<plugin name="cordova-plugin-geolocation" version="2.1.0" />