i have an error, while launching a session in uefn

Summary

when i want to launch a session in uefn i have this error
LogValkyrie: Error: FlowStep_ResolveSessionCandidates(): Candidate module [15f5c736-4927-8b34-285f-159f0232b14c] failed validation with error: [http_error_504:valkyrie-cook-api.prod.ucs.on.epicgames.com]
and i have another error after(linked screenshot)
help me pls

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

Expected Result

session should launch

Observed Result

session should launch

Platform(s)

Pc

Island Code

1479-8540-0178

Upload an image

Additional Notes

another project arent launchin too

Everyone is having this issue, saw another few posts. Its been like this since yesterday and its on epics side since even their templates arent validating

Should be working now