Lightmass crashed

Hi,

I have a problem when I build. indeed when I do the rendering of the light it stays stuck at 0% and he tells me :

=== Lightmass crashed: ===
Assertion failed: rtcDeviceGetError(EmbreeDevice) == RTC_NO_ERROR [File:D:\Build++UE4+Release-4.18+Compile\Sync\Engine\Source\Programs\UnrealLightmass\Private\Lighting\Embree.cpp] [Line: 557]

0x0000000018B04008 KERNELBASE.dll!UnknownFunction []
0x00000000F2075E54 UnrealLightmass-ApplicationCore.dll!UnknownFunction []
0x00000000D9581A8B UnrealLightmass-Core.dll!UnknownFunction []
0x00000000D9512E98 UnrealLightmass-Core.dll!UnknownFunction []
0x0000000069B74CDA UnrealLightmass.exe!UnknownFunction []
0x0000000069B858A4 UnrealLightmass.exe!UnknownFunction []
0x0000000069BBD863 UnrealLightmass.exe!UnknownFunction []
0x0000000069BE04DA UnrealLightmass.exe!UnknownFunction []
0x0000000069C3EC25 UnrealLightmass.exe!UnknownFunction []
0x000000001B3C1FE4 KERNEL32.DLL!UnknownFunction []
0x000000001BC5EFC1 ntdll.dll!UnknownFunction []
0x000000001BC5EFC1 ntdll.dll!UnknownFunction []

I already try to clear the cache. Thank you in advance for your answers

Hey guys i have same problem. Please give some answers

Found this question. He was getting the error. May help.