Cook failure when attempting to launch session

Summary

I got a cook error when I launched a session in my project. I have no idea what is causing this issue. But I do have the logs here.

When I make a private island code, it does a matchmaking error.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Publishing

Steps to Reproduce

Just launch the session

Expected Result

To be able to play the game via session

Observed Result

Cook Failure

Platform(s)

Windows

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FORT-1031783 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.