$ sudo apt-get install libnotify4 gir1.2-notify-0.7 gir1.2-gdkpixbuf-2.0 python3-gi python3 python3-setuptools python3-wheel libbluetooth-dev
$ sudo pip3 install pybluez
$ sudo systemctl edit bluetooth.service

Add this:

[Service]
ExecStart=
ExecStart=/usr/lib/bluetooth/bluetoothd -C
ExecStartPost=/bin/chmod 666 /var/run/sdp