Map fails to load a lokal TPK

TerritoriumOnline

I'm not able to load a lokal TilePackage with the following code

...

property url dataPath: System.userHomePath + "/ArcGIS/Runtime/Data/"
...
        Map {

            id: map

Basemap {

                id: basemap

ArcGISTiledLayer {

                    id: basemapLayer

                    url: dataPath + "tpk/SanFrancisco.tpk"

                }

....

Is there something wrong or missing in the code above?

TerritoriumOnline

&nbsp;&nbsp;&nbsp; <SPAN class=""><A href="https://developers.arcgis.com/qt/latest/qml/api-reference/qml-esri-arcgisruntime-arcgistiledlayer.html" rel="nofollow noopener noreferrer">ArcGISTiledLayer</A></SPAN> {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class=""><A href="https://developers.arcgis.com/qt/latest/qml/api-reference/qml-esri-arcgisruntime-tilecache.html" rel="nofollow noopener noreferrer">TileCache</A></SPAN> {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="">path</SPAN>: <SPAN class="">dataPath</SPAN> <SPAN class="">+</SPAN> <SPAN class="">"tpk/SanFrancisco.tpk"</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }&nbsp;&nbsp;&nbsp;&nbsp; }

I got it!

Nevertheless my own TPK created with ArcMap 10.3 did not work!