QSslKey is null on Mac

[OGCW]

We have just bought a valid certificate and we are trying to use it in the echo example project from QT (http://doc.qt.io/qt-5/qtwebsockets-sslechoserver-example.html).
On Windows all is fine but on MAC we are getting null QSslKey.

[dheerendra]

Is the ECC certificate & Key ? You can look at my post earlier here