Settings crashes when opening

[phoenix]

[phoenixcharm@phoenixcharm ~]$ gnome-control-center

(gnome-control-center:6356): cc-wwan-panel-WARNING **: 21:59:49.321: Error connecting to ModemManager: Error calling StartServiceByName for org.freedesktop.ModemManager1: Unit dbus-org.freedesktop.ModemManager1.service not found.

(gnome-control-center:6356): GLib-GIO-ERROR **: 21:59:49.353: Settings schema 'org.gnome.shell.app-switcher' is not installed
Trace/breakpoint trap (core dumped)

[Scotty_Trees]

Check this thread first to see if any of those solutions are helpful to you:

Cannot open settings at all - important to find a solution

I have EOS budgie on my double boot laptop installed a couple of days ago. Settings app just disappeared at a random time when I was trying to view a setting and by that time I cannot find a way to bring it back. I have killed gnome-control-center but nothing, i really don’t know what’s the problem here. I have restarted the pc and shutdown but nothing fixes the issue. note: I haven’t installed many apps yet, the only things I’ve done is installing some themes, icons etc. Nothing too much. I…

If none of those solutions work, if you’re feeling a little “risky”, you could try this solution that seems to work for some users I found over on the Manjaro forums, but I can’t comment on it’s success since I’m not able to replicate this issue, so please be aware of that:

Can't open system settings since last update

Also, welcome to the EndeavourOS forums