QT5 - Bluetooth Scanner Example cannot pair detected device

Adja

I am trying to run a Bluetooth Scanner Example located on the site below on Fedora 22:

Anytime the application detects a device and I try to pair, I receive the error message below:
qt.bluetooth.bluez: Failed to create pairing "org.bluez.Error.AuthenticationFailed"

I have searched on for possible ways to pair and connect to bluetooth devices through qt5 but I don't seem to get any promising result.

I am trying to create a GUI bluetooth application that can detect, pair and connect to the detected device as a project. Therefore, I would be glad if I can be pointed in the right direction in troubleshooting this error.

Thank you