Segmentation fault on GLib startup

## Prerequisites
- [x] I have searched open and closed issues for duplicates.

## Describe the bug
Whenever I start the bluetooth switchboard plug I get a segfault.

If applicable, add screenshots or screen recordings to help explain your problem.

### To Reproduce
Steps to reproduce the behavior:
1. Go to settings (switchboard)
2. Click on Bluetooth
4. Crash!

### Expected behavior
The bluetooth page should have come up and worked

### Logs
Here's the GDB backtrace:

```
#0 0x00007ffff75f310f in g_dbus_object_manager_get_object ()
at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#1 0x00007fffbf14999f in ()
at /usr/lib/x86_64-linux-gnu/switchboard/network/libbluetooth.so
#2 0x00007fffbf143156 in ()
at /usr/lib/x86_64-linux-gnu/switchboard/network/libbluetooth.so
#3 0x000055555555b51f in ()
#4 0x000055555555b758 in ()
#5 0x00007ffff7904285 in g_main_context_dispatch ()
at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6 0x00007ffff7904650 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7 0x00007ffff7904962 in g_main_loop_run ()
at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8 0x00007ffff6927a25 in gtk_main () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#9 0x000055555555dacb in ()
#10 0x00007ffff72d510d in g_closure_invoke ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007ffff72e7de8 in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007ffff72f0715 in g_signal_emit_valist ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007ffff72f112f in g_signal_emit ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007ffff75bbc55 in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#15 0x00007ffff75bbe66 in g_application_run ()
at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#16 0x000055555555ddb3 in switchboard_main ()
#17 0x00007ffff5e8cb97 in __libc_start_main (main=
0x55555555b360 , argc=1, argv=0x7fffffffdb68, init=, fini=, rtld_fini=, stack_end=0x7fffffffdb58) at ../csu/libc-start.c:310
#18 0x000055555555b39a in _start ()
```

## Platform Information
- [x] I'm using the latest released stable version

- [ ] I'm using the latest version from git that I've manually compiled

## Additional context
All the other switchboard plugs start properly, only bluetooth plug dies.