I’m still new to using UEFN and I’ve messed around with it a bit but this was my first time trying to go into a session and it showed failed to validate for upload yet in the output log there are no red error lines, only thing I saw was a normal message saying failed to update project, I haven’t been able to find a solution.
@GoldenGamerFox25 Thank you for your report! We would like to look into this further, would you be able to submit a bug report using the form available here? Fortnite Creative
Moving to the validation forum