HLOD build error: Assertion failed: (Index >= 0) & (Index < ArrayNum)

Build HLOD failed. How can I know what cause this error?

 0]LogWorldPartitionHLODsBuilder: Display: [716 / 807] Building HLOD actor HLOD0_Main_MainGrid_L5_X6_Y-14_DL0...
[2022.07.22-23.00.34:680][  0]LogLinker: Warning: Asset '/Game/__ExternalActors__/_Main/Maps/Main/0/52/HQMJQQSL2V59IG6V8O9C5N' has been saved with empty engine version. The asset will be loaded but may be incompatible.
[2022.07.22-23.00.34:681][  0]LogLevel: Warning: Actor folder AA2E919E444C3DFC73F259947E9379F9 for actor StaticMeshActor_UAID_04421A21C4C0F32201_1877033361 encountered when not using actor folders
[2022.07.22-23.00.34:682][  0]LogShaderCompilers: Display: ================================================
[2022.07.22-23.00.34:682][  0]LogShaderCompilers: Display: === FShaderJobCache stats ===
[2022.07.22-23.00.34:683][  0]LogShaderCompilers: Display: Total job queries 2, among them cache hits 0 (0.00%)
[2022.07.22-23.00.34:683][  0]LogShaderCompilers: Display: Tracking 2 distinct input hashes that result in 2 distinct outputs (100.00%)
[2022.07.22-23.00.34:683][  0]LogShaderCompilers: Display: RAM used: 0.01 MB (0.00 GB) of 13107.20 MB (12.80 GB) budget. Usage: 0.00%
[2022.07.22-23.00.34:683][  0]LogShaderCompilers: Display: === Shader Compilation stats ===
[2022.07.22-23.00.34:683][  0]LogShaderCompilers: Display: Shaders Compiled: 1
[2022.07.22-23.00.34:683][  0]LogShaderCompilers: Display: Jobs assigned 2, completed 2 (100.00%)
[2022.07.22-23.00.34:684][  0]LogShaderCompilers: Display: Time job spent in pending queue: average 0.03 s, longest 0.04 s
[2022.07.22-23.00.34:684][  0]LogShaderCompilers: Display: Job execution time: average 2.05 s, max 2.35 s
[2022.07.22-23.00.34:684][  0]LogShaderCompilers: Display: Job life time (pending + execution): average 2.08 s, max 2.39
[2022.07.22-23.00.34:684][  0]LogShaderCompilers: Display: Time at least one job was in flight (either pending or executed): 2.39 s
[2022.07.22-23.00.34:684][  0]LogShaderCompilers: Display: Jobs were issued in 2 batches (only local compilation was used), average 1.00 jobs/batch
[2022.07.22-23.00.34:685][  0]LogShaderCompilers: Display: Average processing rate: 0.84 jobs/sec
[2022.07.22-23.00.34:685][  0]LogShaderCompilers: Display: Effective parallelization: 1.22 (times faster than compiling all shaders on one thread). Compare with number of workers: 28
[2022.07.22-23.00.34:686][  0]LogShaderCompilers: Display: Top 2 most expensive shader types by average time:
[2022.07.22-23.00.34:686][  0]LogShaderCompilers: Display:                         TBasePassPSFNoLightMapPolicySkylight (compiled    1 times, average 1.75 sec, max 1.75 sec, min 1.75 sec)
[2022.07.22-23.00.34:686][  0]LogShaderCompilers: Display:                                           FLumenCardPS<true> (compiled    1 times, average 1.18 sec, max 1.18 sec, min 1.18 sec)
[2022.07.22-23.00.34:687][  0]LogShaderCompilers: Display: Top 2 shader types by total compile time:
[2022.07.22-23.00.34:687][  0]LogShaderCompilers: Display:                         TBasePassPSFNoLightMapPolicySkylight - 59.69% of total time (compiled    1 times, average 1.75 sec, max 1.75 sec, min 1.75 sec)
[2022.07.22-23.00.34:687][  0]LogShaderCompilers: Display:                                           FLumenCardPS<true> - 40.31% of total time (compiled    1 times, average 1.18 sec, max 1.18 sec, min 1.18 sec)
[2022.07.22-23.00.34:688][  0]LogShaderCompilers: Display: ================================================
[2022.07.22-23.00.34:899][  0]LogApproximateActors: Warning: very large voxel size 6995 clamped to 1024
[2022.07.22-23.01.39:400][  0]LogThreadingWindows: Error: Runnable thread Background Worker #15 crashed.
[2022.07.22-23.01.39:401][  0]LogWindows: Error: === Critical error: ===
[2022.07.22-23.01.39:401][  0]LogWindows: Error: 
[2022.07.22-23.01.39:401][  0]LogWindows: Error: Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 691] 
[2022.07.22-23.01.39:402][  0]LogWindows: Error: Array index out of bounds: 256 from an array of size 256
[2022.07.22-23.01.39:403][  0]LogWindows: Error: 
[2022.07.22-23.01.39:403][  0]LogWindows: Error: 
[2022.07.22-23.01.39:403][  0]LogWindows: Error: [Callstack] 0x00007ff8c53c444b UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:404][  0]LogWindows: Error: [Callstack] 0x00007ff8c53cb649 UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:404][  0]LogWindows: Error: [Callstack] 0x00007ff8c53b6fc6 UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:405][  0]LogWindows: Error: [Callstack] 0x00007ff8c540915f UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:406][  0]LogWindows: Error: [Callstack] 0x00007ff8c53d5c4f UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:406][  0]LogWindows: Error: [Callstack] 0x00007ff8c53d9a2f UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:407][  0]LogWindows: Error: [Callstack] 0x00007ff8c53e2e87 UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:408][  0]LogWindows: Error: [Callstack] 0x00007ff8c53d4688 UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:408][  0]LogWindows: Error: [Callstack] 0x00007ff8c53b9fd0 UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:409][  0]LogWindows: Error: [Callstack] 0x00007ff8c53db986 UnrealEditor-GeometryProcessingAdapters.dll!UnknownFunction []
[2022.07.22-23.01.39:410][  0]LogWindows: Error: [Callstack] 0x00007ff8f02131e2 UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:410][  0]LogWindows: Error: [Callstack] 0x00007ff8f01febb4 UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:411][  0]LogWindows: Error: [Callstack] 0x00007ff8f020bcff UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:411][  0]LogWindows: Error: [Callstack] 0x00007ff8efeae398 UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:412][  0]LogWindows: Error: [Callstack] 0x00007ff8efe92a78 UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:412][  0]LogWindows: Error: [Callstack] 0x00007ff8efecea02 UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:413][  0]LogWindows: Error: [Callstack] 0x00007ff8efe9f4d0 UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:413][  0]LogWindows: Error: [Callstack] 0x00007ff8f0003d45 UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:414][  0]LogWindows: Error: [Callstack] 0x00007ff8f0597a2b UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:414][  0]LogWindows: Error: [Callstack] 0x00007ff8f0590a90 UnrealEditor-Core.dll!UnknownFunction []
[2022.07.22-23.01.39:415][  0]LogWindows: Error: [Callstack] 0x00007ff957757034 KERNEL32.DLL!UnknownFunction []
[2022.07.22-23.01.39:415][  0]LogWindows: Error: [Callstack] 0x00007ff9556254b6 InfraCore64.dll!UnknownFunction []
[2022.07.22-23.01.39:416][  0]LogWindows: Error: [Callstack] 0x00007ff9596e2651 ntdll.dll!UnknownFunction []
[2022.07.22-23.01.39:416][  0]LogWindows: Error: 
[2022.07.22-23.01.39:416][  0]LogWindows: Error: Crash in runnable thread Background Worker #15
[2022.07.22-23.01.39:586][  0]LogWindows: Warning: OpenClipboard failed with error code 5
1 Like

Hello, did you ever find a solution for this?