ASSERT: "item" in file \Users\qt\work\qt\qtdeclarative\src\quicklayouts\qquickstacklayout.cpp, line 354
Debug Error!

Program: C:\QtCommercial\6.4.0\msvc2019_64\bin\Qt6Cored.dll
Module: 6.4.0
File: \Users\qt\work\qt\qtdeclarative\src\quicklayouts\qquickstacklayout.cpp
Line: 354

ASSERT: "item" in file \Users\qt\work\qt\qtdeclarative\src\quicklayouts\qquickstacklayout.cpp, line 354

                                                                                                    
                                                                                                    
1  qt_message_fatal                              qlogging.cpp                   1917 0x7ffbf03bb264 
2  QMessageLogger::fatal                         qlogging.cpp                   851  0x7ffbf03b96c8 
3  qt_assert                                     qglobal.cpp                    3270 0x7ffbf03a6e09 
4  QQuickStackLayout::rearrange                  qquickstacklayout.cpp          355  0x7ffc0fb2e1ab 
5  QQuickStackLayout::setCurrentIndex            qquickstacklayout.cpp          163  0x7ffc0fb2d79d 
6  QQuickStackLayout::qt_static_metacall         moc_qquickstacklayout_p.cpp    146  0x7ffc0fb2d4b8 
7  QQmlPropertyData::writeProperty               qqmlpropertydata_p.h           375  0x7ffbf59e0e46 
8  GenericBinding<2>::write                      qqmlbinding.cpp                328  0x7ffbf59ff731 
9  QQmlNonbindingBinding::doUpdate               qqmlbinding.cpp                275  0x7ffbf59f98e3 
10 QQmlBinding::update                           qqmlbinding.cpp                201  0x7ffbf59ea9b3 
11 QQmlBinding::expressionChanged                qqmlbinding.cpp                656  0x7ffbf59eab9f 
12 QQmlJavaScriptExpressionGuard_callback        qqmljavascriptexpression.cpp   585  0x7ffbf5af359d 
13 QQmlNotifier::emitNotify                      qqmlnotifier.cpp               107  0x7ffbf5b5b11a 
14 QQmlData::signalEmitted                       qqmlengine.cpp                 382  0x7ffbf5a58af8 
15 doActivate<0>                                 qobject.cpp                    4070 0x7ffbf0582ce0 
16 QMetaObject::activate                         qobject.cpp                    4235 0x7ffbf056b1b8 
17 QQuickContainer::currentIndexChanged          moc_qquickcontainer_p.cpp      417  0x7ffbeca10f75 
18 QQuickContainer::setCurrentIndex              qquickcontainer.cpp            705  0x7ffbeca10e0d 
19 QQuickContainer::qt_static_metacall           moc_qquickcontainer_p.cpp      310  0x7ffbeca10385 
20 QQmlPropertyData::writeProperty               qqmlpropertydata_p.h           375  0x7ffbf59e0e46 
21 GenericBinding<2>::write                      qqmlbinding.cpp                328  0x7ffbf59ff731 
22 QQmlNonbindingBinding::doUpdate               qqmlbinding.cpp                275  0x7ffbf59f98e3 
23 QQmlBinding::update                           qqmlbinding.cpp                201  0x7ffbf59ea9b3 
24 QQmlBinding::expressionChanged                qqmlbinding.cpp                656  0x7ffbf59eab9f 
25 QQmlJavaScriptExpressionGuard_callback        qqmljavascriptexpression.cpp   585  0x7ffbf5af359d 
26 QQmlNotifier::emitNotify                      qqmlnotifier.cpp               107  0x7ffbf5b5b11a 
27 QQmlData::signalEmitted                       qqmlengine.cpp                 382  0x7ffbf5a58af8 
28 doActivate<0>                                 qobject.cpp                    4070 0x7ffbf0582ce0 
29 QMetaObject::activate                         qobject.cpp                    4248 0x7ffbf056b231 
30 QQmlVMEMetaObject::activate                   qqmlvmemetaobject.cpp          1386 0x7ffbf5cf1e96 
31 QQmlVMEMetaObject::metaCall                   qqmlvmemetaobject.cpp          970  0x7ffbf5ceecd4 
32 QQmlPropertyData::doMetacall<2>               qqmlpropertydata_p.h           357  0x7ffbf59d0849 
33 QQmlPropertyData::writeProperty               qqmlpropertydata_p.h           378  0x7ffbf59e0e72 
34 QQmlPropertyPrivate::write                    qqmlproperty.cpp               1406 0x7ffbf5bb025b 
35 QQmlPropertyPrivate::writeValueProperty       qqmlproperty.cpp               1329 0x7ffbf5bafad8 
36 QQmlPropertyPrivate::writeValueProperty       qqmlproperty.cpp               1295 0x7ffbf5baf2e7 
37 QQmlPropertyPrivate::write                    qqmlproperty.cpp               1704 0x7ffbf5bb2dc2 
38 QQmlProperty::write                           qqmlproperty.cpp               1621 0x7ffbf5bac2a5 
39 QQmlBind::eval                                qqmlbind.cpp                   1056 0x7ffbf5d1500f 
40 QQmlBind::prepareEval                         qqmlbind.cpp                   967  0x7ffbf5d1493b 
41 QQmlBind::setValue                            qqmlbind.cpp                   588  0x7ffbf5d14123 
42 QQmlBind::qt_static_metacall                  moc_qqmlbind_p.cpp             155  0x7ffbf5d13a0d 
43 QQmlPropertyData::writeProperty               qqmlpropertydata_p.h           375  0x7ffbf59e0e46 
44 QQmlPropertyPrivate::write                    qqmlproperty.cpp               1442 0x7ffbf5bb073e 
45 QQmlPropertyPrivate::writeValueProperty       qqmlproperty.cpp               1329 0x7ffbf5bafad8 
46 QQmlBinding::slowWrite                        qqmlbinding.cpp                592  0x7ffbf59ebdc8 
47 GenericBinding<0>::write                      qqmlbinding.cpp                387  0x7ffbf5a01081 
48 GenericBinding<0>::write                      qqmlbinding.cpp                333  0x7ffbf5a0144f 
49 QQmlNonbindingBinding::doUpdate               qqmlbinding.cpp                267  0x7ffbf59f979b 
50 QQmlBinding::update                           qqmlbinding.cpp                201  0x7ffbf59ea9b3 
51 QQmlBinding::expressionChanged                qqmlbinding.cpp                656  0x7ffbf59eab9f 
52 QQmlJavaScriptExpressionGuard_callback        qqmljavascriptexpression.cpp   585  0x7ffbf5af359d 
53 QQmlNotifier::emitNotify                      qqmlnotifier.cpp               107  0x7ffbf5b5b11a 
54 QQmlData::signalEmitted                       qqmlengine.cpp                 382  0x7ffbf5a58af8 
55 doActivate<0>                                 qobject.cpp                    4070 0x7ffbf0582ce0 
56 QMetaObject::activate                         qobject.cpp                    4248 0x7ffbf056b231 
57 QQmlVMEMetaObject::activate                   qqmlvmemetaobject.cpp          1386 0x7ffbf5cf1e96 
58 QQmlVMEVariantQObjectPtr::objectDestroyedImpl qqmlvmemetaobject.cpp          191  0x7ffbf5ceba25 
59 QQmlData::destroyed                           qqmlengine.cpp                 1330 0x7ffbf5a59249 
60 QQmlData::destroyed                           qqmlengine.cpp                 302  0x7ffbf5a585a8 
61 QObject::~QObject                             qobject.cpp                    1209 0x7ffbf056c45c 
62 AbstractDialog::~AbstractDialog               abstractdialog.cpp             40   0x7ff72fe43861 
63 MultiPageObject::~MultiPageObject             qtvtm                               0x7ff72faa7e14 
64 MultiPageObject::`scalar deleting destructor' qtvtm                               0x7ff72fec53b8 
65 qDeleteInEventHandler                         qobject.cpp                    5046 0x7ffbf05767eb 
66 QObject::event                                qobject.cpp                    1568 0x7ffbf056cb44 
67 QApplicationPrivate::notify_helper            qapplication.cpp               3305 0x7ffbf637e6ab 
68 QApplication::notify                          qapplication.cpp               3256 0x7ffbf637b98a 
69 QCoreApplication::notifyInternal2             qcoreapplication.cpp           1033 0x7ffbf04a2237 
70 QCoreApplication::sendEvent                   qcoreapplication.cpp           1450 0x7ffbf049f8cb 
71 QCoreApplicationPrivate::sendPostedEvents     qcoreapplication.cpp           1811 0x7ffbf04a45a2 
72 QEventDispatcherWin32::sendPostedEvents       qeventdispatcher_win.cpp       902  0x7ffbf08c7dff 
73 QWindowsGuiEventDispatcher::sendPostedEvents  qwindowsguieventdispatcher.cpp 44   0x7ffbee336b05 
74 QEventDispatcherWin32::processEvents          qeventdispatcher_win.cpp       472  0x7ffbf08c60ff 
75 QWindowsGuiEventDispatcher::processEvents     qwindowsguieventdispatcher.cpp 36   0x7ffbee336abb 
76 QEventLoop::processEvents                     qeventloop.cpp                 101  0x7ffbf04c8c6c 
77 QEventLoop::exec                              qeventloop.cpp                 182  0x7ffbf04c8f54 
78 QCoreApplication::exec                        qcoreapplication.cpp           1354 0x7ffbf049f66a 
79 QGuiApplication::exec                         qguiapplication.cpp            1860 0x7ffbedbf442a 
80 QApplication::exec                            qapplication.cpp               2587 0x7ffbf63786cc 
81 main                                          main.cpp                       106  0x7ff7311442d2 
82 invoke_main                                   exe_common.inl                 79   0x7ff731b21149 
83 __scrt_common_main_seh                        exe_common.inl                 288  0x7ff731b2102e 
84 __scrt_common_main                            exe_common.inl                 331  0x7ff731b20eee 
85 mainCRTStartup                                exe_main.cpp                   17   0x7ff731b211de 
86 BaseThreadInitThunk                           KERNEL32                            0x7ffc7d517034 
87 RtlUserThreadStart                            ntdll                               0x7ffc7e3a2651