dot-editor AUR build error

[ 90%] Building CXX object plugins/automata/CMakeFiles/automata.dir/dfautomata.cc.o
In file included from /usr/include/qt/QtCore/qobject.h:54:0,
                 from /usr/include/qt/QtCore/qcoreapplication.h:46,
                 from /usr/include/qt/QtWidgets/qapplication.h:44,
                 from /usr/include/qt/QtWidgets/QApplication:1,
                 from /tmp/yaourt-tmp-photon/aur-dot-editor/src/dot-editor-1.1.2-Source/build/include/dot-editor/config.h:25,
                 from /tmp/yaourt-tmp-photon/aur-dot-editor/src/dot-editor-1.1.2-Source/build/include/dot-editor/dot-editor.h:25,
                 from /tmp/yaourt-tmp-photon/aur-dot-editor/src/dot-editor-1.1.2-Source/plugins/automata/de-plgin-automata.cc:26:
/usr/include/qt/QtCore/qmetatype.h: In instantiation of 'struct QtPrivate::IsPointerToTypeDerivedFromQObject<PlugIns::AutomataComObj*>':
/usr/include/qt/QtWidgets/qtoolbar.h:120:9:   required by substitution of 'template<class Obj, class Func1> typename QtPrivate::QEnableIf<((! std::is_same<const char*, Func1>::value) && QtPrivate::IsPointerToTypeDerivedFromQObject<T*>::Value), QAction*>::Type QToolBar::addAction(const QIcon&, const QString&, const Obj*, Func1) [with Obj = PlugIns::AutomataComObj; Func1 = const char*]'
/tmp/yaourt-tmp-photon/aur-dot-editor/src/dot-editor-1.1.2-Source/plugins/automata/de-plgin-automata.cc:416:5:   required from here
/usr/include/qt/QtCore/qmetatype.h:1376:40: error: 'QObject' is an inaccessible base of 'PlugIns::AutomataComObj'
         enum { Value = sizeof(checkType(static_cast<T*>(Q_NULLPTR))) == sizeof(yes_type) };
                              ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[ 92%] Building CXX object plugins/automata/CMakeFiles/automata.dir/enfautomata.cc.o
make[2]: *** [plugins/automata/CMakeFiles/automata.dir/build.make:111: plugins/automata/CMakeFiles/automata.dir/de-plgin-automata.cc.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [CMakeFiles/Makefile2:283: plugins/automata/CMakeFiles/automata.dir/all] Error 2
make: *** [Makefile:150: all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...