[CrashReport] Mac Metal crash - FSceneRenderer::RenderDistortion()

Assertion failed: Assertion failed:  [File:/Users/build/Build/++UE4+Release-4.17+Compile/Sync/Engine/Source/Runtime/Apple/MetalRHI/Private/MetalRenderPipelineDesc.cpp] [Line: 580] 
Failed to generate a render pipeline state object:

 Link failed: fragment input user(SV_SampleIndex) was not found in vertex shader outputs

=== Critical error: ===
SIGSEGV: invalid attempt to access memory at address 0x3

FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x7d2fadb  (filename not found) [in UE4Editor-Core.dylib]
FOutputDeviceMacError::Serialize(wchar_t const*, ELogVerbosity::Type, FName const&) Address = 0x7f4708f  (filename not found) [in UE4Editor-Core.dylib]
FOutputDevice::Logf(wchar_t const*, ...) Address = 0x802d8fd  (filename not found) [in UE4Editor-Core.dylib]
FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, ...) Address = 0x7f807ce  (filename not found) [in UE4Editor-Core.dylib]
FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState(FMetalBoundShaderState*, FMetalHashedVertexDescriptor const&) const Address = 0x4673951a (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalBoundShaderState::PrepareToDraw(FMetalHashedVertexDescriptor const&, FMetalRenderPipelineDesc const&) Address = 0x46704c92 (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalContext::PrepareToDraw(unsigned int, EMetalIndexType) Address = 0x466fea28 (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalRHICommandContext::RHIDrawIndexedPrimitive(FRHIIndexBuffer*, unsigned int, int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int) Address = 0x466e0b72 (filename not found) [in UE4Editor-MetalRHI.dylib]
DrawRectangle(FRHICommandList&, float, float, float, float, float, float, float, float, FIntPoint, FIntPoint, FShader*, EDrawRectangleFlags, unsigned int) Address = 0x19473aa8 (filename not found) [in UE4Editor-Renderer.dylib]
FSceneRenderer::RenderDistortion(FRHICommandListImmediate&) Address = 0x190de61e (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::Render(FRHICommandListImmediate&) Address = 0x190362f0 (filename not found) [in UE4Editor-Renderer.dylib]
FRendererModule::BeginRenderingViewFamily(FCanvas*, FSceneViewFamily*)::EURCMacro_FDrawSceneCommand::DoTask(ENamedThreads::Type, TRefCountPtr<FGraphEvent> const&) Address = 0x196bf350 (filename not found) [in UE4Editor-Renderer.dylib]
TGraphTask<FRendererModule::BeginRenderingViewFamily(FCanvas*, FSceneViewFamily*)::EURCMacro_FDrawSceneCommand>::ExecuteTask(TArray<FBaseGraphTask*, FDefaultAllocator>&, ENamedThreads::Type) Address = 0x197236e0 (filename not found) [in UE4Editor-Renderer.dylib]
FNamedTaskThread::ProcessTasksNamedThread(int, bool) Address = 0x7d5300f  (filename not found) [in UE4Editor-Core.dylib]
FNamedTaskThread::ProcessTasksUntilQuit(int) Address = 0x7d52018  (filename not found) [in UE4Editor-Core.dylib]
FTaskGraphImplementation::ProcessThreadUntilRequestReturn(ENamedThreads::Type) Address = 0x7d4dda1  (filename not found) [in UE4Editor-Core.dylib]
RenderingThreadMain(FEvent*) Address = 0xeaa5cb1  (filename not found) [in UE4Editor-RenderCore.dylib]
FRenderingThread::Run() Address = 0xeabb5d7  (filename not found) [in UE4Editor-RenderCore.dylib]
FRunnableThreadPThread::Run() Address = 0x7dd1ad0  (filename not found) [in UE4Editor-Core.dylib]
FRunnableThreadPThread::_ThreadProc(void*) Address = 0x7d739c0  (filename not found) [in UE4Editor-Core.dylib]
_pthread_body() Address = 0xe3f5593b (filename not found) [in libsystem_pthread.dylib]
_pthread_body() Address = 0xe3f55887 (filename not found) [in libsystem_pthread.dylib]
thread_start() Address = 0xe3f5508d (filename not found) [in libsystem_pthread.dylib]

SEGV_MAPERR at 0x3

UE4Editor-MetalRHI.dylib!FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState() 
UE4Editor-MetalRHI.dylib!FMetalBoundShaderState::PrepareToDraw() 
UE4Editor-MetalRHI.dylib!FMetalContext::PrepareToDraw() 
UE4Editor-MetalRHI.dylib!FMetalRHICommandContext::RHIDrawIndexedPrimitive() 
UE4Editor-Renderer.dylib!DrawRectangle() 
UE4Editor-Renderer.dylib!FSceneRenderer::RenderDistortion() 
UE4Editor-Renderer.dylib!FDeferredShadingSceneRenderer::Render() 
UE4Editor-Renderer.dylib!FRendererModule::BeginRenderingViewFamily(FCanvas*, FSceneViewFamily*)::EURCMacro_FDrawSceneCommand::DoTask() 
UE4Editor-Renderer.dylib!TGraphTask<FRendererModule::BeginRenderingViewFamily(FCanvas*, FSceneViewFamily*)::EURCMacro_FDrawSceneCommand>::ExecuteTask() 
UE4Editor-Core.dylib!FNamedTaskThread::ProcessTasksNamedThread() 
UE4Editor-Core.dylib!FNamedTaskThread::ProcessTasksUntilQuit() 
UE4Editor-Core.dylib!FTaskGraphImplementation::ProcessThreadUntilRequestReturn() 
UE4Editor-RenderCore.dylib!RenderingThreadMain() 
UE4Editor-RenderCore.dylib!FRenderingThread::Run() 
UE4Editor-Core.dylib!FRunnableThreadPThread::Run() 
UE4Editor-Core.dylib!FRunnableThreadPThread::_ThreadProc() 
libsystem_pthread.dylib!<Unknown> 
libsystem_pthread.dylib!<Unknown> 
libsystem_pthread.dylib!<Unknown>