Multiplayer Network Crash in 4.8 Patch

So me and a friend are making an online game, and we’ve followed the multiplayer shootout tutorial. It all works perfectly fine in the 4.7 but once we move to any 4.8 patch we keep getting an error on the client window in the PIE. Once we press Play on the server window, it should show an error widget and move us to the main menu so we can search for the server list. The problem is that in the 4.8 it shows “Error, trying to leave current state : 4” on the client window right after we press play on the server, and then in just stays black after that, doesn’t show the main menu or anything. If we run the same project back on 4.7 again, it will work as it should…

Any help is more than welcome!

Thank You , Luis.