When I click launch session to test my project

Summary

When I click launch session to test my project, it opens up, when I press start game, the player stays still, only camera moves and after sometime it closes with error, server stopped responding to connection. Meanwhile the session tab in UEFN changes to push changes, on its own. when I click push changes, it shows exactly in the image provided.
Today is the final date to submit the project for bootcamp.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

1

Expected Result

Game starts normally, and I test my project

Observed Result

Correct and proper UEFN launch session for my project.

Platform(s)

windows

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Additional Notes

Today is the final date to submit the project for bootcamp.