UE 5.3.1 Binary Build. HLOD Build fails for Mac. But, it works with Source Build.

Development World Creation
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UE 5.3.1 Binary Build. HLOD Build fails for Mac. 100% consistency. But, it works with Source Build.

I ran the exact command in terminal as well. I found it cannot even leave a log. Then, I suspected the path string is mishandled (Sort of educated guess here). So, I tried source build (which doesn’t have any empty space in the path.) It worked perfectly fine.

it’s a Mac binary distribution specific issue.

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I have the same issue. Checked within multiple projects also creating new blank projects. Every time I touch something with World-Partitioning the level build breaks.
The log shows nothing useful. Only that the command exited with code 1.

(Using a M1 Mac)

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The solution is to check that the installation folder of Unreal Engine don’t have any whitespace in it. Reinstalling Unreal Engine in a folder without blank spaces resolved the issue.