Viomi vacuum V8 Serial number timeout
[2021/03/23, 17:51:21] [homebridge-xiaomi-roborock-vacuum] This plugin slows down Homebridge. The read handler for the characteristic 'Serial Number' didn't respond at all!. Please check that you properly call the callback! See https://git.io/JtMGR for more info.
[2021/03/23, 17:51:22] [Xiaomi ] ERR getSerialNumber | Failed getting the serial number. Error: Call to device timed out
    at DeviceInfo._retryOnTimeout (C:\Users\David\AppData\Roaming\npm\node_modules\homebridge-xiaomi-roborock-vacuum\miio\lib\device_info.js:295:29)
    at DeviceInfo.call (C:\Users\David\AppData\Roaming\npm\node_modules\homebridge-xiaomi-roborock-vacuum\miio\lib\device_info.js:227:12)
    at module.exports.getSerialNumber (C:\Users\David\AppData\Roaming\npm\node_modules\homebridge-xiaomi-roborock-vacuum\miio\lib\devices\viomivacuum.js:141:20)
    at XiaomiRoborockVacuum.getSerialNumber (C:\Users\David\AppData\Roaming\npm\node_modules\homebridge-xiaomi-roborock-vacuum\index.js:827:28)
    at module.exports (C:\Users\David\AppData\Roaming\npm\node_modules\homebridge-xiaomi-roborock-vacuum\lib\callbackify.js:5:20) {
  code: 'timeout'
}