Homematic and Bluetooth tracker

Installation Home Assistant OS
1

Hi folks,

I needt some help. I tried to get Homematic with HM-MOD-RPI-PCB on my RaspberryPi 3B+ with Home Assistant 0.90.2 to run, but failed.
Therefore I checked several forums and the description on https://www.home-assistant.io/addons/homematic/.

My confix.txt looks in the meanwhile like that but I tried all combinations:

dtoverlay=pi3-miniuart-bt
#enable_uart=1

My configuration.yaml lloks like that:

homematic:
  interfaces:
    rf:
      host: core-homematic
      port: 2001
    wired:
      host: core-homematic
      port: 2000
    hmip:
      host: core-homematic
      port: 2010
device_tracker:
  - platform: bluetooth_tracker
    interval_seconds: 10
    consider_home: 180
    new_device_defaults:
      track_new_devices: false
      hide_if_away: false

I get the following error logs:
components/device_tracker/bluetooth_tracker.py
OSError: [Errno 19] No such device
components/homematic/init.py
Failed to initialize proxy