Unsolved module "QtPositioning" is not installed

[Peter Akarakiri]

Hello all,

I have a Qt app in Ubuntu. I'm trying to run the "subdirs" project using appman. The application builds fine.

When I run the application, I get the following error:

[CRIT | am.system] WARNING: for the installer to work correctly, the executable needs to be run either as root via sudo or SUID (preferred) [sudo.cpp:135]
[CRIT | am.system] (using fallback implementation - you might experience permission errors on installer operations) [sudo.cpp:136]
[WARN | default] The 'builtIn' field is deprecated. This line will not have any effect. [yamlapplicationscanner.cpp:149]
[WARN | default] The 'builtIn' field is deprecated. This line will not have any effect. [yamlapplicationscanner.cpp:149]
[WARN | default] The 'builtIn' field is deprecated. This line will not have any effect. [yamlapplicationscanner.cpp:149]
[WARN | default] The 'builtIn' field is deprecated. This line will not have any effect. [yamlapplicationscanner.cpp:149]
[DBG | am.system] Found Applications: [ [main.cpp:646]
... [main.cpp:648]
[DBG | am.system] ] [main.cpp:649]
[CRIT | am.system] WARNING: could not register service org.freedesktop.Notifications on D-Bus (unix:abstract=/tmp/dbus-xvdZjCDE5A): [main.cpp:232]
[WARN | default] QQmlApplicationEngine failed to load component [qqmlapplicationengine.cpp:132]
[WARN | default] file:///ui/Main.qml:38 Type Display unavailable
file:////../ui/sysui/Display.qml:22 Type StatusBar unavailable
file:///../ui/sysui/StatusBar/StatusBar.qml:49 Type LatLongWidget unavailable
file:///../ui/sysui/StatusBar/LatLongWidget.qml:6 module "QtPositioning" is not installed
[qqmlapplicationengine.cpp:133]
[CRIT | am.system] ERROR: Qml scene does not have a root object

I've tried the following:

1. According to https://forum.qt.io/topic/50037/qml-included-modules-not-installed-unless-qml-directory-is-a-subdirectory-of-the-project-file/3, I set the QML_ROOT_PATH with no luck.
2. This did not help either - http://stackoverflow.com/questions/39472286/qml-error-qrc-main-qml24-module-system-is-not-installed. This is because I'm using appman rather than using "QQmlApplicationEngine" directly to run the application.

Any clues to get the application to run?