How to fix this error ?

I have this error when I want to push modification :
LogValkyrieSummary: Project MyProjectE failed to update
LogValkyrieActivityTracker: Warning: Upload → Fail Activity: MyProjectE - Failed to validate for upload
LogValkyrieSummary: Destroying Valkyrie Beacon
LogValkyrieActivityTracker: Warning: Upload → Fail Activity: UploadProjects - Tous les chargements ont échoué avec des erreurs

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