More simple errors that would be known if author still played the game:
Many errors still popup randomly when simply dragging items in bag or bank.
Doesnt happen all the time.

4x BagBrother/frames/containers/item.lua:23: Usage: GetItemInfo(itemID|"name"|"itemlink")
[string "=[C]"]: in function `GetItemInfo'
[string "@BagBrother/frames/containers/item.lua"]:23: in function <BagBrother/frames/containers/item.lua:20>

Locals:
(*temporary) = nil