I have this message "network connection lost" after launching the session from Unreal Editor

Summary

Hello, I have this message “network connection lost” after launching the session from unreal editor and after a long loading impossible to do a memory calculation to publish the new version of my map, I really need help thank you

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

launch the project session from unreal editor

Expected Result

be able to launch the session correctly to run a memory calculation and post the new version of the island

Observed Result

error message “lost network connection” when starting session on fortnite

Platform(s)

windows

Island Code

1245-9340-0646