Some QML applications cannot be launched

Reproduction Steps:
1, execute samegame.qml file by qmlviewer
2. execute webbrowser.qml file by qmlviewer
3. execute pincharea.qml file by qmlviewer
4. execute textedit.qml file by qmlviewer
5. execute textinput.qml file by qmlviewer
6. execute rtl.qml file by qmlviewer

Expected Result:
applications can be launched.

Actual result:
Applications cannot be launched.

BTW, other applications（flickr demo, calculator demo, dialcontrol example, parallax example) can be launched normally.