Qt Installer Framework 2.0.1 openSsl is broken

The user wants to create her own online installer with Qt Installer Framework 2.0.1. Some of the user servers are using secured communication between client and the server. Thus, the user needs to use open Ssl library to complete her task. However, the user encountered the missing openSsl libraries issue:

[47072] Warning: QSslSocket: cannot call unresolved function SSL_CTX_new
[47073] Warning: QSslSocket: cannot call unresolved function SSL_library_init
[47074] Warning: QSslSocket: cannot call unresolved function ERR_get_error
[47075] Warning: QSslSocket: cannot call unresolved function ERR_get_error
[47078] Network error while downloading 'https://repos.dls-
software.net/chemvision/Updates.xml?587883408': Unable to init SSL Context: .

The expected result is normal communication between server and the online installer (client).

What actually happens: the missing open Ssl issue pop-ups.