Sorry is this is firefoxs fault but I funny enough would like to "fake" my real location on my PC because it actually does not have any GPS. And the modern web is all about smartphones and GPS so there is a app I actually can't use because of no location send. But even the example fails with "Geolocation error: Unknown error acquiring position." When I set my location and then click the location button. And yes I have given it permission.

Firefox 61.0.1 (64-Bit) Kubuntu 18.04