qdoc error in QtQuickTimeline

Scanning dependencies of target prepare_docs_qtquicktimelineplugin
qt.qdoc: Start qdoc for QtQuickTimeline in dual process mode: prepare phase.
(qdoc) Could not find the module header in include paths for module "QtQuickTimeline"   (include paths:  QList("-I/home/qt/qt-build/qtquicktimeline/src/imports/timeline/qtquicktimelineplugin_autogen/include", "-I/home/qt/qt5/qtquicktimeline/src/imports/timeline", "-I/home/qt/qt-build/qtquicktimeline/src/imports/timeline", "-I/home/qt/qt-build/qtbase/include", "-I/home/qt/qt-build/qtbase/include/QtCore", "-I/home/qt/qt5/qtbase/mkspecs/linux-g++", "-I/home/qt/qt-build/qtbase/src/corelib", "-I/home/qt/qt-build/qtbase/include/QtCore/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtCore/6.0.0/QtCore", "-I/home/qt/qt-build/qtbase/include/QtGui", "-I/usr/include", "-I/home/qt/qt-build/qtbase/include/QtQml", "-I/home/qt/qt-build/qtbase/include/QtNetwork", "-I/home/qt/qt-build/qtbase/include/QtQuick", "-I/home/qt/qt-build/qtbase/include/QtQmlModels", "-I/home/qt/qt-build/qtbase/include/QtOpenGL", "-I/home/qt/qt-build/qtbase/src/gui", "-I/home/qt/qt-build/qtbase/include/QtGui/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtGui/6.0.0/QtGui", "-I/usr/include/libxkbcommon", "-I/home/qt/qt-build/qtdeclarative/src/qml", "-I/home/qt/qt-build/qtbase/include/QtQml/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtQml/6.0.0/QtQml", "-I/home/qt/qt-build/qtdeclarative/src/quick", "-I/home/qt/qt-build/qtbase/include/QtQuick/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtQuick/6.0.0/QtQuick", "-I/home/qt/qt-build/qtdeclarative/src/qmlmodels", "-I/home/qt/qt-build/qtbase/include/QtQmlModels/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtQmlModels/6.0.0/QtQmlModels") )
       Artificial module header built from header dirs in qdocconf file
qt.qdoc: Parse source files for "QtQuickTimeline"
qt.qdoc: Source files parsed for "QtQuickTimeline"
qt.qdoc: End qdoc for QtQuickTimeline in dual process mode: prepare phase.
...
Scanning dependencies of target generate_top_level_docs_qtquicktimelineplugin
qt.qdoc: Start qdoc for QtQuickTimeline in dual process mode: generate phase.
(qdoc) Could not find the module header in include paths for module "QtQuickTimeline"   (include paths:  QList("-I/home/qt/qt-build/qtquicktimeline/src/imports/timeline/qtquicktimelineplugin_autogen/include", "-I/home/qt/qt5/qtquicktimeline/src/imports/timeline", "-I/home/qt/qt-build/qtquicktimeline/src/imports/timeline", "-I/home/qt/qt-build/qtbase/include", "-I/home/qt/qt-build/qtbase/include/QtCore", "-I/home/qt/qt5/qtbase/mkspecs/linux-g++", "-I/home/qt/qt-build/qtbase/src/corelib", "-I/home/qt/qt-build/qtbase/include/QtCore/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtCore/6.0.0/QtCore", "-I/home/qt/qt-build/qtbase/include/QtGui", "-I/usr/include", "-I/home/qt/qt-build/qtbase/include/QtQml", "-I/home/qt/qt-build/qtbase/include/QtNetwork", "-I/home/qt/qt-build/qtbase/include/QtQuick", "-I/home/qt/qt-build/qtbase/include/QtQmlModels", "-I/home/qt/qt-build/qtbase/include/QtOpenGL", "-I/home/qt/qt-build/qtbase/src/gui", "-I/home/qt/qt-build/qtbase/include/QtGui/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtGui/6.0.0/QtGui", "-I/usr/include/libxkbcommon", "-I/home/qt/qt-build/qtdeclarative/src/qml", "-I/home/qt/qt-build/qtbase/include/QtQml/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtQml/6.0.0/QtQml", "-I/home/qt/qt-build/qtdeclarative/src/quick", "-I/home/qt/qt-build/qtbase/include/QtQuick/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtQuick/6.0.0/QtQuick", "-I/home/qt/qt-build/qtdeclarative/src/qmlmodels", "-I/home/qt/qt-build/qtbase/include/QtQmlModels/6.0.0", "-I/home/qt/qt-build/qtbase/include/QtQmlModels/6.0.0/QtQmlModels") )
       Artificial module header built from header dirs in qdocconf file
qt.qdoc: Parse source files for "QtQuickTimeline"
qt.qdoc: Source files parsed for "QtQuickTimeline"
qt.qdoc: End qdoc for QtQuickTimeline in dual process mode: generate phase.