Assertion failed: GDefaultMaterials[Domain] != nullptr [File:D:\engines\epic\UE_4.18\Engine\Source\Runtime\Engine\Private\Materials\Material.cpp] [Line: 435]
Cannot load default material 'engine-ini:/Script/Engine.Engine.DefaultMaterialName'


0x00000000C31C9D98 KERNELBASE.dll!UnknownFunction []
0x00000000ABDEBB10 egwServer.exe!FWindowsErrorOutputDevice::Serialize() [d:\engines\epic\ue_4.18\engine\source\runtime\applicationcore\private\windows\windowserroroutputdevice.cpp:65]
0x00000000ABB8ED7B egwServer.exe!FOutputDevice::Logf__VA() [d:\engines\epic\ue_4.18\engine\source\runtime\core\private\misc\outputdevice.cpp:70]
0x00000000ABB219A8 egwServer.exe!FDebug::AssertFailed() [d:\engines\epic\ue_4.18\engine\source\runtime\core\private\misc\assertionmacros.cpp:414]
0x00000000ADEB71CF egwServer.exe!UMaterialInterface::InitDefaultMaterials() [d:\engines\epic\ue_4.18\engine\source\runtime\engine\private\materials\material.cpp:437]
0x00000000ABE8E56C egwServer.exe!UClass::CreateDefaultObject() [d:\engines\epic\ue_4.18\engine\source\runtime\coreuobject\private\uobject\class.cpp:2733]
0x00000000ADEBCE38 egwServer.exe!UMaterialInterface::PostCDOContruct() [d:\engines\epic\ue_4.18\engine\source\runtime\engine\private\materials\material.cpp:459]
0x00000000ABE8E56C egwServer.exe!UClass::CreateDefaultObject() [d:\engines\epic\ue_4.18\engine\source\runtime\coreuobject\private\uobject\class.cpp:2733]
0x00000000ABE8E1CA egwServer.exe!UClass::CreateDefaultObject() [d:\engines\epic\ue_4.18\engine\source\runtime\coreuobject\private\uobject\class.cpp:2672]
0x00000000AC0AE352 egwServer.exe!UObjectLoadAllCompiledInDefaultProperties() [d:\engines\epic\ue_4.18\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:791]
0x00000000AC096DFC egwServer.exe!ProcessNewlyLoadedUObjects() [d:\engines\epic\ue_4.18\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:869]
0x00000000AB9A80F6 egwServer.exe!FEngineLoop::PreInit() [d:\engines\epic\ue_4.18\engine\source\runtime\launch\private\launchengineloop.cpp:1882]
0x00000000AB9A183B egwServer.exe!GuardedMain() [d:\engines\epic\ue_4.18\engine\source\runtime\launch\private\launch.cpp:127]
0x00000000AB9A1ABA egwServer.exe!GuardedMainWrapper() [d:\engines\epic\ue_4.18\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
0x00000000AB9AD002 egwServer.exe!WinMain() [d:\engines\epic\ue_4.18\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
0x00000000AF2015DB egwServer.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
0x00000000C40F2774 KERNEL32.DLL!UnknownFunction []
0x00000000C62A0D51 ntdll.dll!UnknownFunction []
0x00000000C62A0D51 ntdll.dll!UnknownFunction []