Mere listing devices with bt-device is crashed on Ubuntu/Kubuntu 18.04

[OnkelTem]

$ bt-device -l
**
ERROR:lib/bluez/adapter.c:165:adapter_get_dbus_object_path: assertion failed: (ADAPTER_IS(self))
Aborted (core dumped)

$ sudo bt-device -l
**
ERROR:lib/bluez/adapter.c:165:adapter_get_dbus_object_path: assertion failed: (ADAPTER_IS(self))
Aborted

I don't quite understand what am I supposed to do with that. Also I'm not sure about posting this here as similar issues didn't get any responses.

[appdev-w]

Hello OnkelTem,

I have let this project lay fallow for some time. I will build working on a feature branch over this year to bring it up to date. Please continue to raise issues as you encounter them.

Thanks,

~Orange Jack