Bluetooth issues with Linux Mint 19

I've had bluetooth issues in the past, so this was in some sense familiar territory. So I worked through the old posts,and found instructions that someone had posted on an earlier occasion. However, what turned up was new, and so I'm posting it here in the hope that it will help improve things in the long term.

So, I ran #systemctl start bluetooth

And after that, as per instruction, I ran #bluetoothctl -verbose
because minus the -verbose, it would just freeze, and I had to use Ctrl-C to get out of it.

-verbose returned this output

$ bluetoothctl -verbose
bluetoothctl: 5.48

I can't make sense of it. I'm hoping someone else can.