App crashed when openning the file browser

Qt6 app is crashing when trying to open file browser within the app.

(stellarium:21470): GLib-GIO-ERROR **: 15:12:33.718: No GSettings schemas are installed on the system Trace/breakpoint trap (core dumped)

yaml file : https://github.com/t4saha/stellarium-snap/blob/master/snap/snapcraft.yaml