admin@fedora:~$ fopnu
**
GLib-GIO:ERROR:../gio/gdbusconnection.c:4308:invoke_get_property_in_idle_cb: assertion failed: (error != NULL)
Bail out! GLib-GIO:ERROR:../gio/gdbusconnection.c:4308:invoke_get_property_in_idle_cb: assertion failed: (error != NULL)
Аварийный останов (образ памяти сброшен на диск)
admin@fedora:~$


Memory stack: https://ctxt.io/2/AAAIWRe2Ew

Thanks for reporting this.
The Dev will look into this and it should be fixed in the next version.

Fopnu v1.63 has been released and this problem should be solved.
If not, please report back here.

I did not suffer this issue, which Fedora edition, spin or lab are you using?