can't run qml correctly.

[steven37788]

It can build correctlly, but can not run qml correctly in my PC. the console output is there. Can Anybody help me ?

09:50:19: Starting G:\test\qml_TreeView\QmlTreeWidget\build-example-Desktop_Qt_5_12_6_MSVC2017_64bit-Debug\debug\example.exe ...
QML debugging is enabled. Only use this in a safe environment.
Attribute Qt::AA_EnableHighDpiScaling must be set before QCoreApplication is created.
QQmlApplicationEngine failed to load component
qrc:/main.qml:16 Type TreeWidget unavailable
qrc:/TreeWidget.qml:1 module "QtQuick" version 2.13 is not installed