Crash in QV4::ExecutionEngine::fromData

0   QtQml                           0x108cc96f4         QV4::ExecutionEngine::fromData (qv4engine.cpp:1832)
1   QtQml                           0x108ccaca1         QV4::ExecutionEngine::metaTypeToJS (qv4engine.cpp:2023)
2   QtQml                           0x108cf1b05         QV4::ArrowFunction::virtualCallWithMetaTypes (qv4functionobject.cpp:539)
3   QtQml                           0x108ec7b6b         QQmlVMEMetaObject::metaCall (qqmlvmemetaobject.cpp:1015)
4   QtCore                          0x10a134898         QObject::event (qobject.cpp:1356)
5   QtWidgets                       0x1079c32f6         QApplicationPrivate::notify_helper (qapplication.cpp:3350)
6   QtWidgets                       0x1079c42b2         QApplication::notify (qapplication.cpp:2754)
7   QtCore                          0x10a0ec189         QCoreApplication::notifyInternal2 (qcoreapplication.cpp:1067)
8   QtCore                          0x10a0ed2a1         QCoreApplicationPrivate::sendPostedEvents (qcoreapplication.cpp:1845)
9   libqcocoa.dylib                 0x10937aa9a         QCocoaEventDispatcherPrivate::processPostedEvents (qcocoaeventdispatcher.mm:902)
10  libqcocoa.dylib                 0x10937b1aa         QCocoaEventDispatcherPrivate::postedEventsSourceCallback (qcocoaeventdispatcher.mm:925)
11  CoreFoundation                  0x7ff80795019a      __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
12  CoreFoundation                  0x7ff807950102      __CFRunLoopDoSource0
13  CoreFoundation                  0x7ff80794fe7c      __CFRunLoopDoSources0
14  CoreFoundation                  0x7ff80794e897      __CFRunLoopRun
15  CoreFoundation                  0x7ff80794de5b      CFRunLoopRunSpecific
16  HIToolbox                       0x7ff8105f55e5      RunCurrentEventLoopInMode
17  HIToolbox                       0x7ff8105f5349      ReceiveNextEventCommon
18  HIToolbox                       0x7ff8105f50e4      _BlockUntilNextEventMatchingListInModeWithFilter
19  AppKit                          0x7ff80a38d1fc      _DPSNextEvent
20  AppKit                          0x7ff80a38b8b9      -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:]
21  AppKit                          0x7ff80a37df68      -[NSApplication run]
22  libqcocoa.dylib                 0x109379fbb         QCocoaEventDispatcher::processEvents (qcocoaeventdispatcher.mm:430)
23  QtCore                          0x10a0f5875         QEventLoop::exec (qeventloop.cpp:218)
24  QtCore                          0x10a0ec784         QCoreApplication::exec (qcoreapplication.cpp:1388)
25  qml2puppet                      0x1060ae96f         <unknown>
26  qml2puppet                      0x1060ac5e3         <unknown>
27  dyld                            0x1090b251d         start