Launching session takes forever!

Launching sessions into games is never a quick process but ive been watching the output log on one of my projects and it constantly repeats this error until eventually it moves on and launches.

Sometimes it can take around 15 minutes to launch an edit session because of it. Anyone else had similar?

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