Bluetooth_tracker problem

Hi Guys

Use docker Homeassistant Image and work properly.
I have successfully installed a bluetooth_tracker.
Everything is found, mobile phones Bluetooth speakers, etc.

But what is not recognized in Homeassistant or displayed are div. Fitness Tracker … Have even added the MAC address in known_devices.yaml but always absent.
Although in the command line in Docker container with bluetoothctl and hcitool the Mi band are found.

Why can not Homeassistant track them?

can someone help me with my problem? or explain why that is? MAC address always stays the same and does not change.
bluetooth_le_tracker does not work - Error: No devices found in log

hcitool

You should have installed the python3-bluez. Can you check that?
How is your known_devices.yaml ?

python3-bluez is installed in.
in the known_devices.yaml is no trace of a MI band

Edit:

Log Details (WARNING)

Sun Aug 18 2019 00:12:16 GMT+0200 (Mitteleuropäische Sommerzeit)

No Bluetooth LE devices to track!