the same for me
2 Likes
Same issue are is there any advice on how to fix this?
in my case I’m using entity and scene graph maybe this is causing this? I’ve never had this issue before and this is the forst time using scene graph and entities
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I do not use scene graph, i think its just a bug from the latest update?
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It’s on Epic’s back end this has been going on for around 3-4 months they fix it and it crashes again. Don’t mess with your projects it’s not on you also wait a couple hours it should pass.
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私も同じです。シーングラフもエンティティも使用していません。
My project that I just made and has only a few cubes, 2 spawners and a landscape is having this issue
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Appears to have been fixed on the backend
2 Likes
yep, its working for me also now.
Work for me to, now
I think it’s fixed now!
Same error here since today – exact same message:
LogValkyrie: Error: FlowStep_ResolveSessionCandidates(): Candidate module […] failed validation with error: [http_error_500:valkyrie-cook-api.prod.ucs.on.epicgames.com]
Tried:
- New map
- Validation fixes
- Restarting UEFN and PC
- Duplicating the project
→ Still broken
Please confirm if this is a backend issue. Would be great if someone from Epic could acknowledge this, seems a lot of people are running into it.
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Yea its nothing were doing or it would work on the normal epic templates so its deffo epic backend. Seems to be fixed now tho ?
hi @AtAshTag and all, and @Bug-Reporter need more info
Possible workaround post
needs a real fix
hi @Flak , the above link is not showing in bug list
This seems to have been resolved albeit the bug report/any acknowledgement from epic was minimal visually.
Yeah i’ve tried doing the delete hlods and manally delete hlod folders, click level and it reloads the folders. I delete them again and build hlods but then still get the errors. I’ve replaced all the actors. I had 22,000 referencing old hlods at one point and I fixed them and did redo redirectors on the whole content folder because even through the old hlods werent showing in content folder anymore, they were still in the project folder on my D: drive. Still getting the errors. To anyone having issues with hlods though, right click content folder and select “fix up redirectors” and do it frequently as you make map changes. Learn new things everyday.
This bug still appears to be around. I ran into it today. (August 15, 2025)