Failed to find shader map for default material WorldGridMaterial

[DavidCR (David_CR97)]

Hello,
I’m having one issue while packaging my project.

It gives me the error below, and it fails.

LowLevelFatalError 

[File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp] [Line: 2802] 
Failed to find shader map for default material WorldGridMaterial(/Engine/EngineMaterials/WorldGridMaterial.WorldGridMaterial)! Please make sure cooking was successful (No inline shaders, null GTSM)

I already tried to delete temporary folders and verify Unreal version, but that didn’t work.

It’s only happening on Shipping Mode. I can package the project with success. But I can’t launch the game on my device.

Someone knows why this happens?
Thanks in advance.

[DavidCR (David_CR97)]

I tried to

• clean temporary folders,
• verify and uninstall UE,
• recompile all shaders
  How to Force Shader recompile of everything like the first time you run the engine? - #9 by Zeblote

I noticed that is working when I disable the ‘Generate Chunks’ setting. But I would like to keep it on.

[DavidCR (David_CR97)]

Steps to Replicate:

1. Create a clean C++ project in UE5.3,
2. enable ‘Generate Chunks’,
3. package in Shipping Mode
4. and it crashes.

LowLevelFatalError [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp] [Line: 2802] 
Failed to find shader map for default material WorldGridMaterial(/Engine/EngineMaterials/WorldGridMaterial.WorldGridMaterial)! Please make sure cooking was successful (No inline shaders, null GTSM)


0x00007ff7d4d7dc56 DummyProject-Win64-Shipping.exe!FMaterial::CacheShaders() []
0x00007ff7d4d3e965 DummyProject-Win64-Shipping.exe!UMaterial::CacheShadersForResources() []
0x00007ff7d4d3e74e DummyProject-Win64-Shipping.exe!UMaterial::CacheResourceShadersForRendering() []
0x00007ff7d4d464be DummyProject-Win64-Shipping.exe!UMaterial::PostLoad() []
0x00007ff7d2a2d1d7 DummyProject-Win64-Shipping.exe!FAsyncPackage::PostLoadDeferredObjects() []
0x00007ff7d2a30125 DummyProject-Win64-Shipping.exe!FAsyncLoadingThread::ProcessLoadedPackages() []
0x00007ff7d2a35a6a DummyProject-Win64-Shipping.exe!FAsyncLoadingThread::TickAsyncLoading() []
0x00007ff7d2a282d0 DummyProject-Win64-Shipping.exe!FAsyncLoadingThread::FlushLoading() []
0x00007ff7d2a40865 DummyProject-Win64-Shipping.exe!FlushAsyncLoading() []
0x00007ff7d2b75c6a DummyProject-Win64-Shipping.exe!LoadPackageInternal() []
0x00007ff7d2b75aea DummyProject-Win64-Shipping.exe!LoadPackage() []
0x00007ff7d2b7a336 DummyProject-Win64-Shipping.exe!ResolveName() []
0x00007ff7d2b7efc8 DummyProject-Win64-Shipping.exe!StaticLoadObjectInternal() []
0x00007ff7d2b7e879 DummyProject-Win64-Shipping.exe!StaticLoadObject() []
0x00007ff7d4d429f2 DummyProject-Win64-Shipping.exe!UMaterialInterface::InitDefaultMaterials() []
0x00007ff7d2a542d2 DummyProject-Win64-Shipping.exe!UClass::CreateDefaultObject() []
0x00007ff7d4d45d7b DummyProject-Win64-Shipping.exe!UMaterialInterface::PostCDOContruct() []
0x00007ff7d2a542d2 DummyProject-Win64-Shipping.exe!UClass::CreateDefaultObject() []
0x00007ff7d2b54821 DummyProject-Win64-Shipping.exe!UObjectInitialized() []
0x00007ff7d2b4ed50 DummyProject-Win64-Shipping.exe!ProcessNewlyLoadedUObjects() []
0x00007ff7d52b6e60 DummyProject-Win64-Shipping.exe!FEngineLoop::PreInitPostStartupScreen() []
0x00007ff7d52b38b8 DummyProject-Win64-Shipping.exe!GuardedMain() []
0x00007ff7d52b3b9a DummyProject-Win64-Shipping.exe!GuardedMainWrapper() []
0x00007ff7d52b4bac DummyProject-Win64-Shipping.exe!LaunchWindowsStartup() []
0x00007ff7d52bcea4 DummyProject-Win64-Shipping.exe!WinMain() []
0x00007ff7d6b4acd2 DummyProject-Win64-Shipping.exe!__scrt_common_main_seh() [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
0x00007ff808ca257d KERNEL32.DLL!UnknownFunction []

I’m still looking for a reason and a solution.

[DavidCR (David_CR97)]

It’s the best solution that I’ve found.

I still can’t launch on my device, but I can package it in .pak files and play it from there.

I tried a few things as:

• clean temporary files,
• verify and reinstall UE
• recompile all shaders
• reorganize content folders
• move used engine’s content (materials, textures) that I was using in my character into its own character’s folder.