[CrashReport] UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::print_constant()

LogMaterial: Missing cached shader map for material Material_3, compiling. 
LogMaterial: Warning: /Engine/Transient.Material_3 (no disk path found): Failed to compile Material for platform SF_METAL_SM5, Default Material will be used in game.
LogMaterial: 	(Node TextureObject) Texture Object> Requires valid texture
LogShaderCompilers: Warning: ShaderCompileWorker terminated unexpectedly!  Falling back to directly compiling which will be very slow.  Thread 2.
LogMac: Error: appError called: Assertion failed: 0 [File:/Users/build/Build/++UE4+Release-4.18+Compile/Sync/Engine/Source/Developer/Apple/MetalShaderFormat/Private/MetalBackend.cpp] [Line: 2810] 


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

LogMac: 0x032ed85b UE4Editor-Core.dylib!FGenericPlatformMisc::RaiseException(unsigned int)   [UnknownFile]) 
0x090f8f09 UE4Editor-ApplicationCore.dylib!FMacErrorOutputDevice::Serialize(wchar_t const*, ELogVerbosity::Type, FName const&)   [UnknownFile]) 
0x0359bf1d UE4Editor-Core.dylib!FOutputDevice::Logf(wchar_t const*, ...)   [UnknownFile]) 
0x035125ab UE4Editor-Core.dylib!FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, ...)   [UnknownFile]) 
0x46cc5264 UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::print_constant(ir_constant*, int)   [UnknownFile]) 
0x46cc0359 UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit(ir_constant*)   [UnknownFile]) 
0x46cbc931 UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit(ir_expression*)   [UnknownFile]) 
0x46cbd029 UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit(ir_expression*)   [UnknownFile]) 
0x46cbfd0c UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit(ir_assignment*)   [UnknownFile]) 
0x46cbb900 UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit(ir_function_signature*)   [UnknownFile]) 
0x46cbbed5 UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit(ir_function*)   [UnknownFile]) 
0x46c88e8f UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::run(exec_list*)   [UnknownFile]) 
0x46c7fde4 UE4Editor-MetalShaderFormat.dylib!FMetalCodeBackend::GenerateCode(exec_list*, _mesa_glsl_parse_state*, EHlslShaderFrequency)   [UnknownFile]) 
0x46c2a410 UE4Editor-MetalShaderFormat.dylib!FHlslCrossCompilerContext::Run(char const*, char const*, FCodeBackend*, char**, char**)   [UnknownFile]) 
0x46c99d5f UE4Editor-MetalShaderFormat.dylib!FMetalShaderOutputCooker::Build(TArray<unsigned char, FDefaultAllocator>&)   [UnknownFile]) 
0x1b0456e1 UE4Editor-DerivedDataCache.dylib!FDerivedDataCache::FBuildAsyncWorker::DoWork()   [UnknownFile]) 
0x1b043839 UE4Editor-DerivedDataCache.dylib!FAsyncTask<FDerivedDataCache::FBuildAsyncWorker>::DoWork()   [UnknownFile]) 
0x1b0466da UE4Editor-DerivedDataCache.dylib!FAsyncTask<FDerivedDataCache::FBuildAsyncWorker>::Start(bool, FQueuedThreadPool*)   [UnknownFile]) 
0x1b03ba3d UE4Editor-DerivedDataCache.dylib!FDerivedDataCache::GetSynchronous(FDerivedDataPluginInterface*, TArray<unsigned char, FDefaultAllocator>&, bool*)   [UnknownFile]) 
0x46ca9c33 UE4Editor-MetalShaderFormat.dylib!CompileShader_Metal(FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&)   [UnknownFile]) 
0x46cda174 UE4Editor-MetalShaderFormat.dylib!FMetalShaderFormat::CompileShader(FName, FShaderCompilerInput const&, FShaderCompilerOutput&, FString const&) const   [UnknownFile]) 
0x05b4142f UE4Editor-Engine.dylib!FShaderCompileThreadRunnable::CompileDirectlyThroughDll()   [UnknownFile]) 
0x05b426d7 UE4Editor-Engine.dylib!FShaderCompileThreadRunnable::CompilingLoop()   [UnknownFile]) 
0x05b3a099 UE4Editor-Engine.dylib!FShaderCompileThreadRunnableBase::Run()   [UnknownFile]) 
0x0337e12e UE4Editor-Core.dylib!FRunnableThreadPThread::Run()   [UnknownFile]) 
0x03328e77 UE4Editor-Core.dylib!FRunnableThreadPThread::_ThreadProc(void*)   [UnknownFile]) 
0x5a0766c1 libsystem_pthread.dylib!_pthread_body()   [UnknownFile]) 
0x5a07656d libsystem_pthread.dylib!_pthread_body()   [UnknownFile]) 
0x5a075c5d libsystem_pthread.dylib!thread_start()   [UnknownFile]) 

SEGV_MAPERR at 0x3

UE4Editor-ApplicationCore.dylib!FMacErrorOutputDevice::Serialize()
UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::print_constant()
UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit()
UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit()
UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit()
UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit()
UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit()
UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::visit()
UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::run()
UE4Editor-MetalShaderFormat.dylib!FMetalCodeBackend::GenerateCode()
UE4Editor-MetalShaderFormat.dylib!FHlslCrossCompilerContext::Run()
UE4Editor-MetalShaderFormat.dylib!FMetalShaderOutputCooker::Build()
UE4Editor-DerivedDataCache.dylib!FDerivedDataCache::FBuildAsyncWorker::DoWork()
UE4Editor-DerivedDataCache.dylib!FAsyncTask<FDerivedDataCache::FBuildAsyncWorker>::DoWork()
UE4Editor-DerivedDataCache.dylib!FAsyncTask<FDerivedDataCache::FBuildAsyncWorker>::Start()
UE4Editor-DerivedDataCache.dylib!FDerivedDataCache::GetSynchronous()
UE4Editor-MetalShaderFormat.dylib!CompileShader_Metal()
UE4Editor-MetalShaderFormat.dylib!FMetalShaderFormat::CompileShader()
UE4Editor-Engine.dylib!FShaderCompileThreadRunnable::CompileDirectlyThroughDll()
UE4Editor-Engine.dylib!FShaderCompileThreadRunnable::CompilingLoop()
UE4Editor-Engine.dylib!FShaderCompileThreadRunnableBase::Run()
UE4Editor-Core.dylib!FRunnableThreadPThread::Run()
UE4Editor-Core.dylib!FRunnableThreadPThread::_ThreadProc()
libsystem_pthread.dylib!<Unknown>
libsystem_pthread.dylib!<Unknown>
libsystem_pthread.dylib!<Unknown>