Issues in BleakClient with Shelly BLE RPC - 'BleakClient' object has no attribute 'get_services'

Executing "python3.9.exe .\shelly-ble-rpc.py"
Shelly plug found and displayed in terminal
Selected device number 1
Selected command 11

Output in console:
```
Successfully connected to xx:xx:xx:xx:xx:xx.
RPC call attempt 1 failed: 'BleakClient' object has no attribute 'get_services'
All RPC call attempts failed.
All RPC call attempts failed.
'BleakClient' object has no attribute 'get_services'
```