Light building crashes in about 33 -38% during the building process. So I opened Unreal Lightmass.exe in Dependency Walker and I got the following errors. Could you please explain them to me?

Development Rendering
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Warning: At least one delay-load dependency module was not found.
Warning: At least one module has an unresolved import due to a missing export function in a delay-load dependent module.

ICUIN53.DLL Error opening file
ICUUC53.DLL Error opening file
IESHIMS.DLL Error opening file