[TapHandler] Internal warning "QObject::disconnect: Unexpected nullptr parameter"

QObject::disconnect: Unexpected nullptr parameter

 	Qt6Core.dll!QMessageLogger::warning(const char * msg, ...) Line 644	C++
 	Qt6Core.dll!QObject::disconnectImpl(const QObject * sender, void * * signal, const QObject * receiver, void * * slot, const QMetaObject * senderMetaObject) Line 5196	C++
 	[Inline Frame] Qt6Quick.dll!QObject::disconnect(const QQuickWindow *) Line 376	C++
>	Qt6Quick.dll!QQuickTapHandler::connectPreRenderSignal(bool conn) Line 375	C++
 	Qt6Quick.dll!QQuickTapHandler::setPressed(bool press, bool cancel, QPointerEvent * event, QEventPoint & point) Line 302	C++
 	Qt6Quick.dll!QQuickTapHandler::wantsEventPoint(const QPointerEvent * event, const QEventPoint & point) Line 151	C++
 	Qt6Quick.dll!QQuickSinglePointHandler::wantsPointerEvent(QPointerEvent * event) Line 90	C++
 	Qt6Quick.dll!QQuickPointerHandler::handlePointerEvent(QPointerEvent * event) Line 677	C++
 	Qt6Quick.dll!QQuickDeliveryAgentPrivate::deliverUpdatedPoints(QPointerEvent * event) Line 1895	C++
 	Qt6Quick.dll!QQuickDeliveryAgentPrivate::deliverPointerEvent(QPointerEvent * event) Line 1769	C++
 	Qt6Quick.dll!QQuickDeliveryAgentPrivate::handleMouseEvent(QMouseEvent * event) Line 1542	C++
 	Qt6Quick.dll!QQuickDeliveryAgent::event(QEvent * ev) Line 836	C++
 	Qt6Quick.dll!QQuickWindow::event(QEvent * e) Line 1499	C++
 	Qt6Widgets.dll!QApplicationPrivate::notify_helper(QObject * receiver, QEvent * e) Line 3352	C++
 	Qt6Widgets.dll!QApplication::notify(QObject * receiver, QEvent * e) Line 3304	C++
 	Qt6Core.dll!QCoreApplication::notifyInternal2(QObject * receiver, QEvent * event) Line 1067	C++
 	Qt6Gui.dll!QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent * e) Line 2281	C++
 	Qt6Gui.dll!QWindowSystemInterface::sendWindowSystemEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 1143	C++
 	Qt6Core.dll!QEventDispatcherWin32::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 476	C++
 	Qt6Gui.dll!QWindowsGuiEventDispatcher::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 73	C++
 	[Inline Frame] Qt6Core.dll!QEventLoop::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag>) Line 136	C++
 	Qt6Core.dll!QEventLoop::exec(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 218	C++
 	Qt6Core.dll!QCoreApplication::exec() Line 1388	C++

void QQuickTapHandler::connectPreRenderSignal(bool conn)
{
    auto par = parentItem();
    if (!par)
        return;
    if (conn)
        connect(par->window(), &QQuickWindow::beforeSynchronizing, this, &QQuickTapHandler::updateTimeHeld);
    else
        disconnect(par->window(), &QQuickWindow::beforeSynchronizing, this, &QQuickTapHandler::updateTimeHeld); <-- HERE
}