Qml engine suddenly crash and have no ideals how to locate the problem.

1 QV4::QQmlSequence<QList<double>>::containerGetIndexed qv4sequenceobject.cpp 279 0x2ffe5bc
2 QV4::QQmlSequence<QList<double>>::getIndexed qv4sequenceobject.cpp 553 0x2ffe5bc
3 QV4::Object::getIndexed qv4object_p.h 366 0x2ea1fd9
4 QV4::getElementIntFallback qv4runtime.cpp 582 0x2ea1fd9
5 QV4::Runtime::method_loadElement qv4runtime.cpp 630 0x2ea2749
6 QV4::Moth::VME::exec qv4vme_moth.cpp 692 0x2e9288c
7 QV4::Moth::VME::exec qv4vme_moth_p.h 72 0x2f2e736
8 QV4::Function::call qv4function_p.h 72 0x2f2e736
9 QQmlJavaScriptExpression::evaluate qqmljavascriptexpression.cpp 217 0x2f2e736
10 QQmlBoundSignalExpression::evaluate qqmlboundsignal.cpp 237 0x2edb23d
11 QQmlBoundSignal_callback qqmlboundsignal.cpp 370 0x2edc107
12 QQmlNotifier::emitNotify qqmlnotifier.cpp 106 0x2f0cb6d
13 QQmlThreadNotifierProxyObject::qt_metacall qqmlengine.cpp 797 0x2fcc2c3
14 QMetaObject::metacall qmetaobject.cpp 301 0x1d98e04d
15 QMetaCallEvent::placeMetaCall qobject.cpp 508 0x1d9a85a0
16 QObject::event qobject.cpp 1251 0x1d9ac66b
17 QApplicationPrivate::notify_helper qapplication.cpp 3727 0x2be185ca
18 QApplication::notify qapplication.cpp 3099 0x2be1fb83
19 QCoreApplication::notifyInternal2 qcoreapplication.cpp 1048 0x1d984e01
20 QCoreApplication::sendEvent qcoreapplication.h 234 0x1d98a9f6
21 QCoreApplicationPrivate::sendPostedEvents qcoreapplication.cpp 1745 0x1d98a9f6
22 QEventDispatcherWin32::sendPostedEvents qeventdispatcher_win.cpp 1084 0x1d9d20d3
23 QWindowsGuiEventDispatcher::sendPostedEvents qwindowsguieventdispatcher.cpp 81 0x25f9dca8
24 qt_internal_proc(HWND__ *, unsigned int, unsigned int, long) *16 qeventdispatcher_win.cpp 237 0x1d9d50d1
25 USER32!AddClipboardFormatListener 0x74c7bf1b
26 USER32!DispatchMessageW 0x74c783ea
27 USER32!DispatchMessageW 0x74c77c9e
28 USER32!DispatchMessageW 0x74c77a80
29 QEventDispatcherWin32::processEvents qeventdispatcher_win.cpp 629 0x1d9d482c
30 QWindowsGuiEventDispatcher::processEvents qwindowsguieventdispatcher.cpp 74 0x25f9dc87
31 QEventLoop::processEvents qeventloop.cpp 136 0x1d9834b0
32 QEventLoop::exec qeventloop.cpp 214 0x1d983908
33 QCoreApplication::exec qcoreapplication.cpp 1336 0x1d98bff6
34 QGuiApplication::exec qguiapplication.cpp 1761 0xffb15c6
35 QApplication::exec qapplication.cpp 2901 0x2be184a9
36 qMain main.cpp 131 0x401aa0
37 WinMain *16 qtmain_win.cpp 104 0x437b45
38 main 0x46296d