So ive noticed that since installing this mod I can no longer chat from the console as it crashes the server here is an example:

2019-01-30 03:10:18 [CHAT] <server>: foo
76196.143 Error MainLoop.cpp:1035: Exception at tick 15542995: Error while running event WaypointTeleport::on_console_chat (ID 71)
WaypointTeleport/control.lua:123: bad argument #2 to 'index' (string expected, got nil)
76196.143 Error ServerMultiplayerManager.cpp:96: MultiplayerManager failed: "Error while running event WaypointTeleport::on_console_chat (ID 71)
__WaypointTeleport/control.lua:123: bad argument #2 to '__index' (string expected, got nil)"
76196.143 Info ServerMultiplayerManager.cpp:699: mapTick(15542995) changing state from(InGame) to(Failed)
76196.143 Info GlobalContext.cpp:696: Waiting for child processes to exit:
76196.644 Info ServerMultiplayerManager.cpp:142: Quitting multiplayer connection.
76196.644 Info ServerMultiplayerManager.cpp:699: mapTick(4294967295) changing state from(Failed) to(Closed)
76196.645 Info HttpSharedState.cpp:54: Downloading https://multiplayer.factorio.com/remove-game/4229379
76196.697 Info HttpSharedState.cpp:145: Status code: 200
76196.697 Info UDPSocket.cpp:206: Closing socket
76196.697 Info UDPSocket.cpp:236: Socket closed
76196.697 Info UDPSocket.cpp:206: Closing socket
76196.863 Info UDPSocket.cpp:206: Closing socket
76196.863 Info UDPSocket.cpp:236: Socket closed
76196.863 Goodbye

Thank you for the report, I will be attempting to fix this and update it as soon as possible.

Fixed, I have added a prefix to the mod and have updated it from 0.0.1 to 0.0.2. The error you were having has been fixed, again thank you for the information.