Crash in QQmlPropertyPrivate::initProperty

0   QtQml                           0x103bfa298         QQmlPropertyPrivate::initProperty (qqmlproperty.cpp:404)
1   QtQml                           0x103bf9b78         QQmlPropertyPrivate::initProperty (qqmlproperty.cpp:277)
2   QtQml                           0x103bfab7c         QQmlProperty::QQmlProperty (qqmlproperty.cpp:192)
3   QtQuickTimeline                 0x10116f93c         QQuickKeyframeGroup::setProperty (qquickkeyframe.cpp:445)
4   QtQuickTimeline                 0x1011725c8         QQuickTimeline::reevaluate (qquicktimeline.cpp:309)
5   QtQuickTimeline                 0x10116eb78         QQuickKeyframe::setValue (qquickkeyframe.cpp:542)
6   QtQuickTimeline                 0x10116bf8c         QQuickKeyframe::qt_metacall (moc_qquickkeyframe_p.cpp:199)
7   QtQuick                         0x1016fcd5c         QQmlDesignerMetaObject::metaCall (qqmldesignermetaobject.cpp:268)
8   QtQml                           0x103bff3a4         QQmlPropertyPrivate::write (qqmlproperty.cpp:1421)
9   QtQml                           0x103bfe210         QQmlPropertyPrivate::writeValueProperty (qqmlproperty.cpp:1291)
10  qml2puppet                      0x100ddf29c         <unknown>
11  qml2puppet                      0x100dbd0bc         <unknown>
12  qml2puppet                      0x100df8f2c         <unknown>
13  qml2puppet                      0x100d8411c         <unknown>
14  qml2puppet                      0x100d802dc         <unknown>
15  QtCore                          0x105221c60         doActivate<T> (qobject.cpp:3921)
16  QtCore                          0x105221ec0         doActivate<T> (qobject.cpp:3933)
17  QtNetwork                       0x102c360d8         QAbstractSocketPrivate::canReadNotification (qabstractsocket.cpp:696)
18  QtNetwork                       0x102c3dd30         QReadNotifier::event (qnativesocketengine.cpp:1272)
19  QtWidgets                       0x10264a1c4         QApplicationPrivate::notify_helper (qapplication.cpp:3350)
20  QtWidgets                       0x10264b22c         QApplication::notify (qapplication.cpp:3301)
21  QtCore                          0x1051d969c         QCoreApplication::notifyInternal2 (qcoreapplication.cpp:1067)
22  QtCore                          0x10531f1f8         qt_mac_socket_callback (qcfsocketnotifier.cpp:75)
23  CoreFoundation                  0x1827e135c         __CFSocketPerformV0
24  <unknown>                       0x340d8001827b4b08  <unknown>
25  CoreFoundation                  0x1827b4b04         __CFRunLoopDoSource0
26  <unknown>                       0x60458001827b3168  <unknown>
27  CoreFoundation                  0x1827b3164         __CFRunLoopRun
28  <unknown>                       0x2e6400018b328990  <unknown>
29  HIToolbox                       0x18b32898c         RunCurrentEventLoopInMode
30  <unknown>                       0xb85c80018b3284c4  <unknown>
31  CoreFoundation                  0x18276e014         -[__NSDictionaryM __apply:context:]
32  CoreFoundation                  0x18275defc         -[_CFXPreferences _deliverPendingKVONotifications]
33  CoreFoundation                  0x1828d15bc         __Block_byref_object_dispose_
34  AppKit                          0x18530d4ec         -[NSApplicationFunctionRowController _teardown]
35  CoreFoundation                  0x18275e72c         _CFStringSlowPathCopyBundleUnloadingProtectedString
36  CoreFoundation                  0x182765904         __60-[CFPrefsSearchListSource addSuiteSourceForIdentifier:user:]_block_invoke