crashed when I zoomed in

Map size 99x99 filled in entire back ground with forest added in water added in country roads added in city floor selected city docor zoomed in on city area this is where it crashed at. error message: LowLevelFatalError[File:D\build\++UES\Sync\Engine\Source\Runtime\RHI\Private\PipelineStateCashe.cpp] [Line:546] Shader compilation failures are fatal.