Issues when trying to launch the project in Fortnite

Hi, im new creating projects in UEFN and im having some trouble to test my project.

I created a Rocket League Parkour in the Moon, but when trying to start session in fortnite it gives me the following errors:

LogValkyrieActivityTracker: Warning: Upload → Fail Activity: Parkour_Extreme_Auto - Failed to validate for upload

LogValkyrieActivityTracker: Warning: Upload → Fail Activity: UploadProjects - Hubo errores en todo el contenido cargado (its in spanish, errors in all the content)

What can i do? My map is very simple, we are using fortnite prompts and the only rare thing we do is change the sky and put a shpere to represent the moon.

@Furypeek 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