QlikView Error sourcedocument failed to reload when trying to load report in QlikView 12.40

I am building a QlikView Server using Version 12.40 on a Windows Server 2019 Server.

Everything was installed and the service account user is an account that we already use on another QlikView Version (Version 11 on Windows 2008). All I doing is building a new Server with a modern OS and different version of QlikView using the same reports and the user, which we know works on the older version.

Unfortunately, when I try loading the reports, I am getting an error message "sourcedocument failed to reload..Exception=System.Runtime.InteropServices.COMException (0x80004005): Error HRESULT E_FAIL has been returned from a call to a COM component.

Searching, there seems to be multiple possibilities for this error, but very little in the way of solutions. So, I would like to ask whether any has experienced this problem before on Server 2019 with QlikView or can provide any help or guidance to assist?