QLowEnergyService::writeDescriptor never emits the QLowEnergyService::descriptorWritten signal

I have attached an example code where I use an android program called BLE Scanner that allows to use BLE advertisers, in this example create a Heart Rate advertiser.

deviceName = "devic"
serviceUUID = "{0000180d-0000-1000-8000-00805f9b34fb}";
characteristicUUID = "{00002a37-0000-1000-8000-00805f9b34fb}"

this feature is of type Notify but when I try to enable it using:

service-> writeDescriptor (notificationDescriptor, QByteArray :: fromHex ("0100"));

The QLowEnergyService::descriptorWritten signal is supposed to be emitted, but this never happens, as a result, I can not retrieve the information from the peripheral device.

Note:

This behavior also happens when I try to run the "Bluetooth Low Energy Heart Rate Game" example