Upon running the Qt Location example MapViewer present in Qt version 5.4.2 for Windows (using mingW compiler and OpenGL), the project runs successfully but does not display the map component and returns different errors for each rebuilding of the project.

Upon the first build and test execution of the project, the errors included the following among many others of a similar nature:

"Imperative code is not supported in the Qt Quick Designer" (with regard to the Timer component, among others)
"QML RouteModel: Error: Plugin does not support routing
Error message:Qt Location requires app_id and token parameters.
Please register at https://developer.here.com/ to get your personal application credentials."

Upon the second execution, the above errors did not appear, but the following error persisted throughout the execution:

"QGeoTileRequestManager: Failed to fetch tile (237,148,8) 5 times, giving up. Last error message was: 'Connection refused'"