qml code model crash

Thread 11 Crashed:: QmlJSEditor::Internal::SemanticInfoUpdater
0   libQmlJS.4.7.83.dylib         	0x000000010f19a244 QmlJS::Context::imports(QmlJS::Document const*) const + 20
1   libQmlJS.4.7.83.dylib         	0x000000010f19a300 QmlJS::Context::lookupType(QmlJS::Document const*, QmlJS::AST::UiQualifiedId*, QmlJS::AST::UiQualifiedId*) const + 32
2   libQmlJS.4.7.83.dylib         	0x000000010f19a81c QmlJS::Context::lookupReference(QmlJS::Value const*) const + 220
3   libQmlJS.4.7.83.dylib         	0x000000010f12dac8 QmlJS::PrototypeIterator::hasNext() + 168
4   libQmlJS.4.7.83.dylib         	0x000000010f152d28 QmlJS::ScopeBuilder::setQmlScopeObject(QmlJS::AST::Node*) + 392
5   libQmlJS.4.7.83.dylib         	0x000000010f152740 QmlJS::ScopeBuilder::push(QmlJS::AST::Node*) + 160
6   libQmlJS.4.7.83.dylib         	0x000000010f1448da QmlJS::Check::visitQmlObject(QmlJS::AST::Node*, QmlJS::AST::UiQualifiedId*, QmlJS::AST::UiObjectInitializer*) + 3386
7   libQmlJS.4.7.83.dylib         	0x000000010f143b91 QmlJS::Check::visit(QmlJS::AST::UiObjectDefinition*) + 17
8   libQmlJS.4.7.83.dylib         	0x000000010f0e8d8c QmlJS::AST::UiObjectDefinition::accept0(QmlJS::AST::Visitor*) + 28
9   libQmlJS.4.7.83.dylib         	0x000000010f0e9126 QmlJS::AST::UiObjectMemberList::accept0(QmlJS::AST::Visitor*) + 86
10  libQmlJS.4.7.83.dylib         	0x000000010f0e8ca6 QmlJS::AST::UiProgram::accept0(QmlJS::AST::Visitor*) + 118
11  libQmlJS.4.7.83.dylib         	0x000000010f0e649e QmlJS::AST::Node::accept(QmlJS::AST::Node*, QmlJS::AST::Visitor*) + 46
12  libQmlJS.4.7.83.dylib         	0x000000010f1421c5 QmlJS::Check::operator()() + 101
13  libQmlJSEditor.dylib          	0x000000010fb173f5 QmlJSEditor::Internal::SemanticInfoUpdater::makeNewSemanticInfo(QSharedPointer<QmlJS::Document const> const&, QmlJS::Snapshot const&) + 1269
14  libQmlJSEditor.dylib          	0x000000010fb16da6 QmlJSEditor::Internal::SemanticInfoUpdater::run() + 422
15  org.qt-project.QtCore         	0x00000001080e3be3 QThreadPrivate::start(void*) + 323
16  libsystem_pthread.dylib       	0x00007fff60d84661 _pthread_body + 340
17  libsystem_pthread.dylib       	0x00007fff60d8450d _pthread_start + 377
18  libsystem_pthread.dylib       	0x00007fff60d83bf9 thread_start + 13