Game Crashes in 4.20

My game crashes a couple of minutes into the actual game when I play it with a friend.
I looked at the log files and can’t see anything that helps me, I don’t even know if it’s something in the game or the engine.

We are launching the game from the .uproject, I’m the server and my friend connects as client.

I attached both log files.

Can anyone help and tell me why the game crashes?