I see that the fgallery project has moved to gitlab. There the geolocation merge request is still opened: https://gitlab.com/wavexx/fgallery/-/merge_requests/95
It references the missing map.png file available from https://gitlab.com/tillea/fgallery/-/commit/2eaf626c02c805aad32c86307f512ddf2f5ab833 Kim Minh.