Im running a Clusterio Server on 0.18.30 and when a Player leaves, Automatic Belt Direction causes an crash of that instance.
Fact: 2020-06-12 15:38:21 [LEAVE] Kernol12 left the game
Fact:   91.655 Error MainLoop.cpp:1205: Exception at tick 256057: The mod Automatic Belt Direction (1.3.1) caused a non-recoverable error.Please report this error to the mod author.
Error while running event automatic-belt-direction::on_player_left_game (ID 44)
automatic-belt-direction/gui.lua:59: attempt to index field 'adbgui' (a nil value)
stack traceback:
automatic-belt-direction/gui.lua:59: in function 'removegui'
automatic-belt-direction/control.lua:164: in function <automatic-belt-direction/control.lua:150>
  91.655 Error ServerMultiplayerManager.cpp:90: MultiplayerManager failed: "The mod Automatic Belt Direction (1.3.1) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event automatic-belt-direction::on_player_left_game (ID 44)
automatic-belt-direction/gui.lua:59: attempt to index field 'adbgui' (a nil value)
stack traceback:
automatic-belt-direction/gui.lua:59: in function 'removegui'
automatic-belt-direction/control.lua:164: in function <automatic-belt-direction/control.lua:150>"
  91.655 Info ServerMultiplayerManager.cpp:771: updateTick(256057) changing state from(InGame) to(Failed)
  91.655 Quitting: multiplayer error.
Clusterio | RCON Disconnected!
Fact:   92.068 Info ServerMultiplayerManager.cpp:136: Quitting multiplayer connection.  92.068 Info ServerMultiplayerManager.cpp:771: updateTick(4294967295) changing state from(Failed) to(Closed)
Fact:   92.069 Info HttpSharedState.cpp:54: Downloading https://multiplayer.factorio.com/remove-game/7564420
Fact:   92.175 Info UDPSocket.cpp:218: Closing socket  92.175 Info UDPSocket.cpp:248: Socket closed
  92.175 Info UDPSocket.cpp:218: Closing socket
Fact:   92.298 Info UDPSocket.cpp:218: Closing socket  92.298 Info UDPSocket.cpp:248: Socket closed
Fact:   92.301 Goodbye
child process exited with code 0