react-native-ble-plx: Question: BleError: Characteristic xxx read failed for device xxx and service xxx

Prerequisites

I am using "react-native-ble-plx": "^2.0.3",

Question

Thank you in advance for your help 😁. I really appreciate all the hard work you put into this amazing package ♥️.

I am getting an error when running the below code after what seems to be a successful scan:

export let tryToConnectToDevice = async device => {
  console.log('try to connect to device')
  await manager().stopDeviceScan()
  events.triggerEvent(eventNames.searchingEnded)

  let d = await manager().connectToDevice(device.id)
  console.log('connected to device: ', bluetoothContracts.cleanUpBtShit(d))
  let dCheck = await manager().connectedDevices([serviceAndCharacteristicIds.service])
  console.log('connectedDevices: ', dCheck)

  let servicesAndCharacteristics = await d.discoverAllServicesAndCharacteristics()
  console.log(
    'servicesAndCharacteristics: ',
    bluetoothContracts.cleanUpBtShit(servicesAndCharacteristics),
  )
  let services = await manager().servicesForDevice(d.id)
  console.log('services: ', services)
  let characteristics = await manager().characteristicsForDevice(
    d.id,
    serviceAndCharacteristicIds.service,
  )
  console.log('characteristics: ', characteristics)

  if (characteristics[0]?.uuid == serviceAndCharacteristicIds.tx) {
    let characteristic = await manager().readCharacteristicForDevice(
      d.id,
      serviceAndCharacteristicIds.service,
      serviceAndCharacteristicIds.tx,
    )
    console.log('readCharacteristicForDevice: ', characteristic)
  } else {
    await manager().cancelDeviceConnection(d.id)
  }
}

console:

LOG  try to connect to device
 LOG  connected to device:  {"_manager": {"_activePromises": {}, "_activeSubscriptions": {"1": [Object]}, "_eventEmitter": {"_nativeModule": [Object]}, "_scanEventSubscription": null, "_uniqueId": 4}, "id": "xxx", "isConnectable": null, "localName": null, "manufacturerData": null, "mtu": 23, "name": "xxx", "overflowServiceUUIDs": null, "rssi": null, "serviceData": null, "serviceUUIDs": null, "solicitedServiceUUIDs": null, "txPowerLevel": null}
 LOG  connectedDevices:  [{"_manager": {"_activePromises": [Object], "_activeSubscriptions": [Object], "_eventEmitter": [NativeEventEmitter], "_scanEventSubscription": null, "_uniqueId": 5}, "id": "xxx", "isConnectable": null, "localName": null, "manufacturerData": null, "mtu": 23, "name": "xxx", "overflowServiceUUIDs": null, "rssi": null, "serviceData": null, "serviceUUIDs": null, "solicitedServiceUUIDs": null, "txPowerLevel": null}]
 LOG  servicesAndCharacteristics:  {"_manager": {"_activePromises": {}, "_activeSubscriptions": {"1": [Object]}, "_eventEmitter": {"_nativeModule": [Object]}, "_scanEventSubscription": null, "_uniqueId": 7}, "id": "xxx", "isConnectable": null, "localName": null, "manufacturerData": null, "mtu": 23, "name": "xxx", "overflowServiceUUIDs": null, "rssi": null, "serviceData": null, "serviceUUIDs": null, "solicitedServiceUUIDs": null, "txPowerLevel": null}
 LOG  services:  [{"_manager": {"_activePromises": [Object], "_activeSubscriptions": [Object], "_eventEmitter": [NativeEventEmitter], "_scanEventSubscription": null, "_uniqueId": 8}, "deviceID": "xxx", "id": 10791587712, "isPrimary": true, "uuid": "xxx"}]
 LOG  characteristics:  [{"_manager": {"_activePromises": [Object], "_activeSubscriptions": [Object], "_eventEmitter": [NativeEventEmitter], "_scanEventSubscription": null, "_uniqueId": 9}, "deviceID": "xxx", "id": 10740079456, "isIndicatable": false, "isNotifiable": true, "isNotifying": false, "isReadable": false, "isWritableWithResponse": false, "isWritableWithoutResponse": false, "serviceID": 10791587712, "serviceUUID": "xxx", "uuid": "xxx", "value": "AK5tAw=="}, {"_manager": {"_activePromises": [Object], "_activeSubscriptions": [Object], "_eventEmitter": [NativeEventEmitter], "_scanEventSubscription": null, "_uniqueId": 9}, "deviceID": "xxx", "id": 10740079840, "isIndicatable": false, "isNotifiable": false, "isNotifying": false, "isReadable": false, "isWritableWithResponse": true, "isWritableWithoutResponse": true, "serviceID": 10791587712, "serviceUUID": "xxx", "uuid": "xxx", "value": null}]
 WARN  Possible Unhandled Promise Rejection (id: 0):
BleError: Characteristic xxx read failed for device xxx and service xxx
BleError: Characteristic xxx read failed for device xxx and service xxx
    at construct (native)
    at apply (native)
    at _construct (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:3348:28)
    at Wrapper (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:3310:25)
    at construct (native)
    at _createSuperInternal (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:103132:322)
    at call (native)
    at BleError (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:103140:26)
    at parseBleError (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:103170:30)
    at ?anon_0_ (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:103394:47)
    at throw (native)
    at asyncGeneratorStep (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:4644:26)
    at _throw (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:4666:29)
    at tryCallOne (/Users/distiller/react-native/sdks/hermes/build_iphoneos/lib/InternalBytecode/InternalBytecode.js:53:16)
    at anonymous (/Users/distiller/react-native/sdks/hermes/build_iphoneos/lib/InternalBytecode/InternalBytecode.js:139:27)
    at apply (native)
    at anonymous (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:29744:26)
    at _callTimer (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:29663:17)
    at _callReactNativeMicrotasksPass (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:29693:17)
    at callReactNativeMicrotasks (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:29856:44)
    at __callReactNativeMicrotasks (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:2793:46)
    at anonymous (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:2605:45)
    at __guard (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:2777:15)
    at flushedQueue (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:2604:21)
    at invokeCallbackAndReturnFlushedQueue (http://192.168.1.3:8081/node_modules/expo/AppEntry.bundle?platform=ios&dev=true&hot=false:2598:33)