Uncaught InternalError: BLE task completed that wasn't scheduled (3/4)

This is the part of code running after connection.

function Connect(){
  NRF.connect(macaddress).then(function(g) {
    gatt = g;
    return gatt.startBonding(); 
    }).then(function(service) {
    try{
        console.log(gatt.getSecurityStatus());
        console.log("Connected");
        return setTimeout(() => (gatt.getPrimaryService(serviceUid).catch(onRejected)), 2000);
    }
    catch(exception){
      console.log(exception);
    }
      console.log("Service");
      return service.getCharacteristic(characteristcUid).catch(onRejected);}).then(function(characteristic) {
        console.log(characteristic);
        console.log("Got:", JSON.stringify(d.buffer));
        });
}

and this is what it is returned by the console:

[
BluetoothDevice: {

"id": "5b:93:7d:91:e5:7c private-resolvable",
"rssi": -39,
"data": new Uint8Array([2, 1, 26, 3, 3, 10, 24, 17, 7, 114, 131, 89, 57, 60, 2, 116, 174, 69, 70, 180, 13, 199, 230, 80, 241]).buffer,
"services": [
  "180a",
  "f150e6c7-0db4-4645-ae74-023c39598372"
 ]

}
]
{ "connected": true, "encrypted": false, "mitm_protected": false, "bonded": true }
Connected
The code run into a problem: Not connected