LootManager

Error while running the chunk
  [string "Mods/Addons/LootManager/Scripts/ScriptLChoice.lua"]:300: attempt to index a nil value
  func: __index, metamethod, line: -1, defined: C, line: -1, [C]
    func: ?, ?, line: 300, defined: Lua, line: 298, [string "Mods/Addons/LootManager/Scripts/ScriptLChoice.lua"]

  
  func: __index, metamethod, line: -1, defined: C, line: -1, [C]
    func: itemMallGetItemType, global, line: 1279, defined: Lua, line: 1273, [string "Mods/Addons/AddonsTools/Scripts/ScriptLIB.lua"]
      func: EVENT_INVENTORY_ITEM_ADDED, field, line: 546, defined: Lua, line: 534, [string "Mods/Addons/LootManager/Scripts/ScriptLChoice.lua"]
        func: ?, ?, line: 579, defined: Lua, line: 577, [string "Mods/Addons/LootManager/Scripts/ScriptLChoice.lua"]