QN-scale bug

[Derenden]

Got an error from a Bluetooth scale whitch is appearing as QN-scale. The scale itself is probably not supported, sold under many diffenet names & brands. Mine is an iGet Body B11.

The scale itself is showing connection & the app is able to find it. During the measurement i get this error message:

Build version: 2.5.2-pro
Build date: 1981-01-01 01:01:02
Current date: 2024-09-11 17:58:11
Device: Xiaomi MI 8 Pro
OS version: Android 10 (SDK 29)

Stack trace:
java.lang.NullPointerException: no valid characteristic provided
at j$.util.Objects.requireNonNull(Unknown Source:5)
at com.welie.blessed.BluetoothPeripheral.writeCharacteristic(BluetoothPeripheral.java:1229)
at com.health.openscale.core.bluetooth.BluetoothCommunication.writeBytes(BluetoothCommunication.java:303)
at com.health.openscale.core.bluetooth.BluetoothCommunication.writeBytes(BluetoothCommunication.java:291)
at com.health.openscale.core.bluetooth.BluetoothQNScale.onNextStep(BluetoothQNScale.java:111)
at com.health.openscale.core.bluetooth.BluetoothCommunication.nextMachineStep(BluetoothCommunication.java:610)
at com.health.openscale.core.bluetooth.BluetoothCommunication.nextMachineStep(BluetoothCommunication.java:612)
at com.health.openscale.core.bluetooth.BluetoothCommunication.nextMachineStep(BluetoothCommunication.java:612)
at com.health.openscale.core.bluetooth.BluetoothCommunication.resumeMachineState(BluetoothCommunication.java:210)
at com.health.openscale.core.bluetooth.BluetoothCommunication$1.onServicesDiscovered(BluetoothCommunication.java:464)
at com.welie.blessed.BluetoothPeripheral$1$1.run(BluetoothPeripheral.java:210)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:224)
at android.app.ActivityThread.main(ActivityThread.java:7562)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)