Ok, I believe I found the culprit. We have the Player Evolution mod installed. Apparently the 2 mods don't play well together. I saved my server game and fired it up in single player and it output a nice stack trace. I'm not sure it's something you can fix. If I can find the time, I may dig into the...

I really like this mod. But I'm currently having issues with it killing my hosted MP game. I'm running 0.16.36 Factorio. When I try to enter the lab, it completely shuts the game down. I didn't have this issue when running a MP game that was self-hosted, just on an external server.