Failed to validate for upload when trying to Launch Session

Hello. Last night I had electricity outage when I was doing my UEFN map. After I woke up and opened my project, pressed Launch Session I got “Failed to validate for upload” message. But there nothing red in Output Log. I remember adding Billboard with text, then pressing ctrl+s to save project, after that my PC went off. Today I opened project and there were no same Billboard. Tried restarting UEFN, adding new assets, deleting old assets, copying and renaming project folder(after opened same project with new name I got the same issue). Also when I opened my another, older project, the session launched instantly.

Can you help me please?

Checked today Logs folder and found there were fails with “014MUMEEPA3LYDEZKYY0V2.uasset”.

[2023.05.10-08.12.55:597][ 38]LogAssetRegistry: Error: Package C:/Users/maxdy/Documents/Fortnite Projects/bounce2/Plugins/bounce/Content/ExternalActors/bounce/C/UD/014MUMEEPA3LYDEZKYY0V2.uasset has malformed tag

[2023.05.10-08.13.18:208][710]LogValkyrieSyncProject: Error: Failed to find public assets [Failed to read C:/Users/maxdy/Documents/Fortnite Projects/bounce2/Plugins/bounce/Content/ExternalActors/bounce/C/UD/014MUMEEPA3LYDEZKYY0V2.uasset]

Maybe thats the problem, but still I have no idea how to fix that. There is no “014MUMEEPA3LYDEZKYY0V2.uasset” in my project Outliner. But this file is in my UD project folder. Last modified in time of electricity outage. Size 17,1 KB.

Wow. I fixed that by just deleting that file from the folder. :face_with_head_bandage: :cold_face:

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Glad you got it sorted, thank you for the update!

You solved it? I have the same problam and I don’t know what to do
(LogValkyrieSyncProject: Error: Failed to find public assets)

What folder?

Thank you for the fix, this just happened to me.

deleteing the files make the game unplayable

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