Failed to connect to Mi Kettle - Software caused connection abort

I've cloned the repo, done `npm install`, added dbus config, configured cybele as follows, using token obtained via https://github.com/PiotrMachowski/Xiaomi-cloud-tokens-extractor:
```
% cat config.json
{
"mqtt": {
"url": "mqtt://localhost"
},
"dongles": [
{
"hciDevice": "hci0",
"mode": "le",
"services": [],
"devices": [
{
"type": "MiKettleDevice",
"friendlyName": "Mi Kettle",
"mac": "kettle mac",
"productId": 1116,
"token": [255,255 ... - token ]
}
]
}
]
}
```

And I'm getting the following errors:
```
% node app.js
Connected to MQTT Broker
Startup complete
Mi Kettle {
message: 'Failed to connect to Mi Kettle',
error: 'Software caused connection abort'
} while connecting
Disconnected from Mi Kettle
Mi Kettle {
message: 'Failed to connect to Mi Kettle',
error: 'Software caused connection abort'
} while connecting
Disconnected from Mi Kettle
Mi Kettle {
message: 'Failed to connect to Mi Kettle',
error: 'Software caused connection abort'
} while connecting
Disconnected from Mi Kettle
```
from `bluetoothd`:
```
bluetoothd[416]: src/device.c:load_gatt_db() No cache for kettle:mac
bluetoothd[416]: src/device.c:load_gatt_db() No cache for kettle:mac
```
`btmgmt` says:
```
hci0 kettle:mac type LE Public connected eir_len 21
hci0 kettle:mac type LE Public disconnected with reason 0
```
Any ideas what's wrong?