UE 5.5 - Error on launch (LS-0013) on Mac

Just downloaded UE 5.5 on Mac. Every time I try to launch, I get a ‘Launch Failed’ message with Error Code: LS-0013.

I’m running Mac OS Montery 12.76 on a 28 core Mac Pro, which according to the website meets the requirements to run UE. Previous versions have worked fine with no issue.

I tried deleting the web cache folder, but the problem still persists.

I would be grateful if someone can advise how to fix the issue.

LS-0013: Game is unable to launch - Epic Games Store Support