Either entering editor mode using /editor or starting a new editor, if I go to place down some desert tiles I get the following crash:

136.837 Error MainLoop.cpp:1173: Exception at tick 333: The mod Landfill Painting caused a non-recoverable error.
Please report this error to the mod author.

Error while running event LandfillPainting::on_player_built_tile (ID 45)
LandfillPainting/control.lua:29: attempt to index field 'item' (a nil value)
stack traceback:
LandfillPainting/control.lua:29: in function 'tilebuilt'
LandfillPainting/control.lua:40: in function <LandfillPainting/control.lua:39>