Com.polidea.rxandroidble2.exceptions.blecharacteristicnotfoundexception: Characteristic Not Found With Uuid

I'm trying to read an unsolicited data stream from my Bluetooth device. The data should appear as a byte array. Unfortunately, the UUID I'm supplying doesn't seem to be the correct

Solution 1:

It can't be seen from your code snippet, but are rxBleDevice and device the same RxAndroidBle instance? If not, perhaps replace device !!.establishConnection(false) with rxBleDevice.establishConnection(false)