Crash on save as

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   QtCore                        	       0x1087743c8 QMetaObject::cast(QObject const*) const + 28
1   libLanguageClient.dylib       	       0x1111eb7a8 QMetaObject::cast(QObject*) const + 32 (qobjectdefs.h:172)
2   libLanguageClient.dylib       	       0x1111eb7a8 QMetaObject::cast(QObject*) const + 32 (qobjectdefs.h:172)
3   libLanguageClient.dylib       	       0x111175384 TextEditor::TextDocument* qobject_cast<TextEditor::TextDocument*>(QObject*) + 32 (qobject.h:474)
4   libLanguageClient.dylib       	       0x1112abce0 LanguageClient::LanguageClientManager::documentWillSave(Core::IDocument*) + 36 (languageclientmanager.cpp:548)
5   libLanguageClient.dylib       	       0x1112b84f0 QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<Core::IDocument*>, void, void (LanguageClient::LanguageClientManager::*)(Core::IDocument*)>::call(void (LanguageClient::LanguageClientManager::*)(Core::IDocument*), LanguageClient::LanguageClientManager*, void**) + 140 (qobjectdefs_impl.h:171)
6   libLanguageClient.dylib       	       0x1112b842c void QtPrivate::FunctionPointer<void (LanguageClient::LanguageClientManager::*)(Core::IDocument*)>::call<QtPrivate::List<Core::IDocument*>, void>(void (LanguageClient::LanguageClientManager::*)(Core::IDocument*), LanguageClient::LanguageClientManager*, void**) + 80 (qobjectdefs_impl.h:208)
7   libLanguageClient.dylib       	       0x1112b8338 QtPrivate::QSlotObject<void (LanguageClient::LanguageClientManager::*)(Core::IDocument*), QtPrivate::List<Core::IDocument*>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) + 148 (qobjectdefs_impl.h:419)
8   QtCore                        	       0x1087b18f4 0x108700000 + 727284
9   libCore.dylib                 	       0x10e418e54 Core::EditorManager::aboutToSave(Core::IDocument*) + 96 (moc_editormanager.cpp:619)
10  libCore.dylib                 	       0x10e5f981c Core::Internal::EditorManagerPrivate::saveDocumentAs(Core::IDocument*) + 348 (editormanager.cpp:2543)
11  libCore.dylib                 	       0x10e5ec3ac Core::EditorManager::saveDocumentAs() + 16 (editormanager.cpp:3032)
12  libCore.dylib                 	       0x10e56a5ac QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (*)()>::call(void (*&)(), void**) + 32 (qobjectdefs_impl.h:163)
13  libCore.dylib                 	       0x10e56a554 void QtPrivate::FunctionPointer<void (*)()>::call<QtPrivate::List<>, void>(void (*)(), void*, void**) + 40 (qobjectdefs_impl.h:232)
14  libCore.dylib                 	       0x10e56a4f0 QtPrivate::QStaticSlotObject<void (*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) + 128 (qobject_impl.h:90)
15  QtCore                        	       0x1087b18f4 0x108700000 + 727284
16  QtGui                         	       0x1057b92d8 QAction::triggered(bool) + 60
17  libUtils.7.83.0.dylib         	       0x106b71830 QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<bool>, void, void (QAction::*)(bool)>::call(void (QAction::*)(bool), QAction*, void**) + 144 (qobjectdefs_impl.h:171)
18  libUtils.7.83.0.dylib         	       0x106b71768 void QtPrivate::FunctionPointer<void (QAction::*)(bool)>::call<QtPrivate::List<bool>, void>(void (QAction::*)(bool), QAction*, void**) + 80 (qobjectdefs_impl.h:208)
19  libUtils.7.83.0.dylib         	       0x106b71674 QtPrivate::QSlotObject<void (QAction::*)(bool), QtPrivate::List<bool>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) + 148 (qobjectdefs_impl.h:419)
20  QtCore                        	       0x1087b18f4 0x108700000 + 727284
21  QtGui                         	       0x1057b9160 QAction::activate(QAction::ActionEvent) + 368
22  QtCore                        	       0x1087aa278 QObject::event(QEvent*) + 584
23  QtWidgets                     	       0x106025330 QApplicationPrivate::notify_helper(QObject*, QEvent*) + 272
24  QtWidgets                     	       0x106026398 QApplication::notify(QObject*, QEvent*) + 512
25  QtCore                        	       0x10876886c QCoreApplication::notifyInternal2(QObject*, QEvent*) + 208
26  QtCore                        	       0x108769af0 QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 828
27  libqcocoa.dylib               	       0x1065d3ea4 0x1065bc000 + 97956
28  libqcocoa.dylib               	       0x1065d4534 0x1065bc000 + 99636
29  CoreFoundation                	       0x1b06e29a0 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
30  CoreFoundation                	       0x1b06e28ec __CFRunLoopDoSource0 + 208
31  CoreFoundation                	       0x1b06e25ec __CFRunLoopDoSources0 + 268
32  CoreFoundation                	       0x1b06e0f6c __CFRunLoopRun + 828
33  CoreFoundation                	       0x1b06e0490 CFRunLoopRunSpecific + 600
34  HIToolbox                     	       0x1b9300dd8 RunCurrentEventLoopInMode + 292
35  HIToolbox                     	       0x1b9300b54 ReceiveNextEventCommon + 564
36  HIToolbox                     	       0x1b9300908 _BlockUntilNextEventMatchingListInModeWithFilter + 72
37  AppKit                        	       0x1b323fb2c _DPSNextEvent + 860
38  AppKit                        	       0x1b323e424 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1328
39  AppKit                        	       0x1b32305f0 -[NSApplication run] + 596
40  libqcocoa.dylib               	       0x1065d341c 0x1065bc000 + 95260
41  QtCore                        	       0x108771f28 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 544
42  QtCore                        	       0x108768f48 QCoreApplication::exec() + 128
43  Qt Creator                    	       0x104dc2944 main + 11136 (main.cpp:790)
44  dyld                          	       0x104e51088 start + 516