I don't have any other info for you, sadly.
Randomly crashed with this.

139.207 Error MainLoop.cpp:853: Exception at tick 17295783: Error while running event lh_eternity_trees::on_tick (ID 0)
lh_eternity_trees/control.lua:140: attempt to compare number with nil
139.207 Error ServerMultiplayerManager.cpp:93: MultiplayerManager failed: "Error while running event lh_eternity_trees::on_tick (ID 0)
lh_eternity_trees/control.lua:140: attempt to compare number with nil"
139.207 Info ServerMultiplayerManager.cpp:663: mapTick(17295783) changing state from(InGame) to(Failed)

Which version of mod and factorio?

0.0.5 + 0.15.9 runs fine on our server, so please check if you are up2date