NamePlateBars2

Error while running the chunk
  [string "Mods/Addons/NamePlateBars2/Scripts/NamePlateBars2.lua"]:794: attempt to call global 'despawned' (a nil value)
  func: despawned, global, line: -1, defined: C, line: -1, [C]
    func: findPetOwner, upvalue, line: 794, defined: Lua, line: 790, [string "Mods/Addons/NamePlateBars2/Scripts/NamePlateBars2.lua"]
      func: spawned, global, line: 820, defined: Lua, line: 807, [string "Mods/Addons/NamePlateBars2/Scripts/NamePlateBars2.lua"]
        func: UnitSpawned, global, line: 828, defined: Lua, line: 827, [string "Mods/Addons/NamePlateBars2/Scripts/NamePlateBars2.lua"]
          func: RelationChanged, global, line: 876, defined: Lua, line: 873, [string "Mods/Addons/NamePlateBars2/Scripts/NamePlateBars2.lua"]
            func: ?, ?, line: 1371, defined: Lua, line: 1370, [string "Mods/Addons/NamePlateBars2/Scripts/NamePlateBars2.lua"]

  
  func: __index, metamethod, line: -1, defined: C, line: -1, [C]
    func: findPetOwner, upvalue, line: 794, defined: Lua, line: 790, [string "Mods/Addons/NamePlateBars2/Scripts/NamePlateBars2.lua"]
      func: spawned, global, line: 820, defined: Lua, line: 807, [string "Mods/Addons/NamePlateBars2/Scripts/NamePlateBars2.lua"]
        func: ?, ?, line: 828, defined: Lua, line: 827, [string "Mods/Addons/NamePlateBars2/Scripts/NamePlateBars2.lua"]