Monster.lua error

[nanduzenho]

Good morning, does anyone know why this error appeared, despite being working?

function Monster:onDropLoot(corpse)
    if configManager.getNumber(configKeys.RATE_LOOT) == 0 then
        return
    end
    
    local player = Player(corpse:getCorpseOwner())
    local mType = self:getType()
    if not player or player:getStamina() > 840 then
        local monsterLoot = mType:getLoot()
        for i = 1, #monsterLoot do
        
            -- // NEW CODE
            local ring = player:getSlotItem(CONST_SLOT_RING)
            if ring and ring:getId() == 13120 then
                local extraPercent = 10
                local default = monsterLoot[i].chance
            
                if default < 100000 then
                    monsterLoot[i].chance = default + ((extraPercent * (default / 1000) / 100) * 1000)
                end
            end
            -- // NEW CODE

            -- // NEW CODE
            local ring = player:getSlotItem(CONST_SLOT_RING)
            if ring and ring:getId() == 2179 then
                local extraPercent = 5
                local default = monsterLoot[i].chance
            
                if default < 100000 then
                    monsterLoot[i].chance = default + ((extraPercent * (default / 1000) / 100) * 1000)
                end
            end
            -- // NEW CODE   

            -- // NEW CODE
            local ring = player:getSlotItem(CONST_SLOT_RING)
            if ring and ring:getId() == 2124 then
                local extraPercent = 2
                local default = monsterLoot[i].chance
            
                if default < 100000 then
                    monsterLoot[i].chance = default + ((extraPercent * (default / 1000) / 100) * 1000)
                end
            end
            -- // NEW CODE       
        
            local item = corpse:createLootItem(monsterLoot[i])
            if not item then
                print('[Warning] DropLoot:', 'Could not add loot item to corpse.')
            end
        end

        if player then
            local text = ("Loot of %s: %s"):format(mType:getNameDescription(), corpse:getContentDescription())
            local party = player:getParty()
            if party then
                party:broadcastPartyLoot(text)
            else
                player:sendTextMessage(MESSAGE_INFO_DESCR, text)
            end
        end
    else
        local text = ("Loot of %s: nothing (due to low stamina)"):format(mType:getNameDescription())
        local party = player:getParty()
        if party then
            party:broadcastPartyLoot(text)
        else
            player:sendTextMessage(MESSAGE_INFO_DESCR, text)
        end
    end
end