[REG 6.4.3->6.4.2] webenginequick/quicknanobrowser not launching

6.4.3/gcc_64/bin/qt-cmake -S /home/qt/RTA/Qt_6.4.3/Examples/Qt-6.4.3/webenginequick/quicknanobrowser -B /home/qt/RTA/Qt_6.4.3/Examples/Qt-6.4.3/webenginequick/quicknanobrowser/bld_gcc_64 -GNinja 

QWebEngineFileSystemAccessRequest is neither a QObject, nor default- and copy-constructible. You should not use it as a QML type.
QWebEngineCertificateError is neither a QObject, nor default- and copy-constructible. You should not use it as a QML type.
QWebEngineFullScreenRequest is neither a QObject, nor default- and copy-constructible. You should not use it as a QML type.
QWebEngineLoadingInfo is neither a QObject, nor default- and copy-constructible. You should not use it as a QML type.
QQmlApplicationEngine failed to load component
qrc:/ApplicationRoot.qml:19:48: Type BrowserWindow unavailable
qrc:/BrowserWindow.qml:35:5: Settings is not a type
Failed to load sources