I think that a similar happening for me, right after an offscreen attack the following came up:
2716.918 Error MainLoop.cpp:1202: Exception at tick 11691888: The mod Lightorio (0.18.2) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event lightorio::on_entity_died (ID 4)
lightorio/control.lua:112: table index is nil
stack traceback:
lightorio/control.lua:112: in function <lightorio/control.lua:102>
2716.918 Error ServerMultiplayerManager.cpp:90: MultiplayerManager failed: "The mod Lightorio (0.18.2) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event lightorio::on_entity_died (ID 4)
lightorio/control.lua:112: table index is nil
stack traceback:
lightorio/control.lua:112: in function <lightorio/control.lua:102>"
2716.918 Info ServerMultiplayerManager.cpp:771: updateTick(11691888) changing state from(InGame) to(Failed)
2716.918 Quitting: multiplayer error.
2717.019 Info ServerMultiplayerManager.cpp:136: Quitting multiplayer connection.
2717.019 Info ServerMultiplayerManager.cpp:771: updateTick(4294967295) changing state from(Failed) to(Closed)
https://imgur.com/a/dJ0yVGw