Unable to launch a session : "We hit an error while cooking this content errors.com.epicgames.content-service.cook_failure"

Summary

Since the update 35.20, I’m unable to launch a session or build a private code of my island.

The session, start but after the project has been send, I get the error in the screenshot attached to this post.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

Launch a session

Expected Result

Session start without error

Observed Result

The session start but with an error

Platform(s)

Tried on PC, Xbox, Xbox cloud and Luna

Upload an image

Additional Notes

When I try to launch the session, before I was getting an other error already post here : Validation error from outdated files in sys/versions (regression?)

Here is the log file of UEFN for the last session I tried to launch:
UnrealEditorFortnite - Copy.log (6.4 MB)

2 Likes

FORT-920755 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.

I think the issue is related to the error pointed out here: Validation error from outdated files in sys/versions (regression?) - #42 by sonictke

@nicoplv Just to double-check, are you all good here, or are you saying that this is a different issue you’re still running into?

1 Like

I AM HAVING THE SAME ISSUE IS THERE ANY WAY TO FIX IT

Everythink is good now, thank you.
The issue was:

using {UMG}

Hi @REVO_RUSH, could you please provide more details and copy/paste the exact error message you’re seeing here? Thanks.