Lightmass crash

Hello guys, thanks for taking the time to read this… Ive stumble to a problem ive never had before, you see, I cant build the lights for my project, ive done some research… this is what ive done already:

Cleaned up the cache from the swarm agent
Move everything so the light needs to be built again.

heres the error log>

=== Lightmass crashed: ===
Assertion failed: DLLHandle != nullptr [File:D:\Build++UE4+Release-4.18+Compile\Sync\Engine\Source\Runtime\Core\Private\Internationalization\ICUInternationalization.cpp] [Line: 238]

0x0000000000714008 KERNELBASE.dll!UnknownFunction []
0x00000000D8475E54 UnrealLightmass-ApplicationCore.dll!UnknownFunction []
0x000000008A3B1A8B UnrealLightmass-Core.dll!UnknownFunction []
0x000000008A342E98 UnrealLightmass-Core.dll!UnknownFunction []
0x000000008A288D5B UnrealLightmass-Core.dll!UnknownFunction []
0x000000008A280AA6 UnrealLightmass-Core.dll!UnknownFunction []
0x000000008A2FEF79 UnrealLightmass-Core.dll!UnknownFunction []
0x000000008A54B2AD UnrealLightmass-Core.dll!UnknownFunction []
0x000000008A34FADB UnrealLightmass-Core.dll!UnknownFunction []
0x000000008A369A96 UnrealLightmass-Core.dll!UnknownFunction []
0x000000008A34FCA1 UnrealLightmass-Core.dll!UnknownFunction []
0x000000009DBAA91B UnrealLightmass.exe!UnknownFunction []
0x000000009DC098CC UnrealLightmass.exe!UnknownFunction []
0x000000009DB58CFA UnrealLightmass.exe!UnknownFunction []
0x000000009DBA413B UnrealLightmass.exe!UnknownFunction []
0x000000009DBA6BAD UnrealLightmass.exe!UnknownFunction []
0x000000009DB75771 UnrealLightmass.exe!UnknownFunction []
0x000000009DBAD863 UnrealLightmass.exe!UnknownFunction []
0x000000009DBD04DA UnrealLightmass.exe!UnknownFunction []
0x000000009DC2EC25 UnrealLightmass.exe!UnknownFunction []
0x0000000002AC1FE4 KERNEL32.DLL!UnknownFunction []
0x000000000350EFC1 ntdll.dll!UnknownFunction []
0x000000000350EFC1 ntdll.dll!UnknownFunction []

nice error, ever try real time lighting, in world settings there is “force no pre-computed light” or something. And in project settings, under rendering, and check build mesh distance fields.
not solving your issue, but and alternative.

I have the same problem