export AddItem issue: bad 'for' limit (number expected, got nil)

[Legacy-TacticalGamingInteractive]

I've got a script where I'm selling an animal carcass from hunting. Unfortunately its giving me an error during the money part. Please see:

[ script:ox_inventory] SCRIPT ERROR: @ox_inventory/modules/inventory/server.lua:884: bad 'for' limit (number expected, got nil)
[ script:ox_inventory] > ref (@ox_inventory/modules/inventory/server.lua:884)
[ script:ox_inventory] > handler (@nfire_hunting/server/main.lua:65)
[ script:ox_inventory] > <unknown> (@oxmysql/dist/build.js:22252)
[ script:ox_inventory] > processTicksAndRejections (node:internal/process/task_queues:96)
[script:nfire_hunting] SCRIPT ERROR: @nfire_hunting/server/main.lua:65: 
[script:nfire_hunting]  An error occurred while calling export `AddItem` in resource `ox_inventory`:
[script:nfire_hunting] 
[script:nfire_hunting]  ---
[script:nfire_hunting] > <unknown> (@oxmysql/dist/build.js:22252)
[script:nfire_hunting] > processTicksAndRejections (node:internal/process/task_queues:96)

Here is the function:

RegisterNetEvent('nfire_hunting:SellCarcass')
AddEventHandler('nfire_hunting:SellCarcass',function (item)
    local itemData = exports.ox_inventory:Search(source,'slots', item)[1]
    if itemData.count >= 1 then
        local reward = Config.sellPrice[item].max * Config.gradeMultiplier[itemData.metadata.type]
        if Config.degrade and itemData.metadata.durability ~= nil then
            local currentTime = os.time()
            local maxTime = itemData.metadata.durability
            local minTime = maxTime - itemData.metadata.degrade * 60
            if currentTime >= maxTime then
                currentTime = maxTime
            end
            reward =math.floor(map(currentTime, maxTime, minTime, Config.sellPrice[item].min * Config.gradeMultiplier[itemData.metadata.type], Config.sellPrice[item].max * Config.gradeMultiplier[itemData.metadata.type]))
        end
        exports.ox_inventory:RemoveItem(source, item, 1, nil, itemData.slot)
        exports.ox_inventory:AddItem(source, 'money', reward)  -- line 65
    end
end)

In the config

Config.sellPrice = {
    ['carcass_boar'] =      {min = 150,max = 1000}, -- min = 0 durability   max = 100 durability
    ['carcass_hawk'] =      {min = 200,max = 1200},
    ['carcass_cormorant'] = {min = 60,max = 600},
    ['carcass_coyote'] =    {min = 30,max = 300},
    ['carcass_deer'] =      {min = 50,max = 500},
    ['carcass_mtlion'] =    {min = 80,max = 800},
    ['carcass_rabbit'] =    {min = 40,max = 400}
}

Do you know what the error means? I'm at a loss. And the original script dev has archived the script so I'm kinda stuck. Script was made for ox inv 2.7.4. If it matters or not. I've tried looking at the documentation for ox inv but no luck figuring out this error. Thank you for your input.

[thelindat]

I don't have a clue what the error is referencing because of version differences.

[Legacy-TacticalGamingInteractive]

sigh. idk.

[thelindat]

Not a clue, since any inv will always have slots defined.