The following happens on loading into the game or on a reload.

1x BagBrother\Startup.lua:78: attempt to call global 'HasKey' (a nil value)
BagBrother\Startup.lua:78: in function UpdateData' BagBrother\Startup.lua:30: in function ?'
BagBrother\Startup.lua:20: in function <BagBrother\Startup.lua:20>

Locals:
self = BagBrother {
BANKFRAME_OPENED = defined @BagBrother\Events.lua:42
ParseItem = defined @BagBrother\API.lua:47
SetupEvents = defined @BagBrother\Startup.lua:49
VOID_STORAGE_CLOSE = defined @BagBrother\Events.lua:68
SaveBag = defined @BagBrother\API.lua:19
PLAYER_EQUIPMENT_CHANGED = defined @BagBrother\Events.lua:31
SaveEquip = defined @BagBrother\API.lua:40
GUILDBANKFRAME_OPENED = defined @BagBrother\Events.lua:83
Realm =

{
}
StartupCache = defined @BagBrother\Startup.lua:33
PLAYER_MONEY = defined @BagBrother\Events.lua:35
BANKFRAME_CLOSED = defined @BagBrother\Events.lua:46
GUILDBANKFRAME_CLOSED = defined @BagBrother\Events.lua:87
VOID_STORAGE_OPEN = defined @BagBrother\Events.lua:64
Player = {
}
RemoveEvent = defined @BagBrother\Startup.lua:89
GUILDBANKBAGSLOTS_CHANGED = defined @BagBrother\Events.lua:95
0 =
GUILD_ROSTER_UPDATE = defined @BagBrother\Events.lua:91
UpdateData = defined @BagBrother\Startup.lua:69
BAG_UPDATE = defined @BagBrother\Events.lua:25
}
(*temporary) = nil
(*temporary) = "attempt to call global 'HasKey' (a nil value)"