Save models in datastores script, why this not works?

Hi!

I'am a noob in scripts, so i wanna ask you whats wrong in this script, what saves model to table and create a key to load it.

First script is this:

function onClicked(click)
local dataStore = game:GetService("DataStoreService"):GetDataStore("ItemSave")
local itemTable = {}

for i,v in pairs(game.Workspace.Tycoon:GetChildren()) do
    table.insert(itemTable, v.Name)
end

local condensedData = game:GetService("HttpService"):JSONEncode(itemTable)
local playerObject = click

dataStore:UpdateAsync(click.UserId, function()
    return condensedData
end)
end
script.Parent.ClickDetector.MouseClick:connect(onClicked)

This script is search model in workspace, save it to table (i think) and create a player key to load this model later.

After player rejoin, he was press button what activate this script:

function onClicked(click)
local playerObject = click
game:GetService("DataStoreService"):GetDataStore("ItemSave"):GetAsync(click.UserId)
end

script.Parent.ClickDetector.MouseClick:connect(onClicked)

So, this is not work. When i wanna save model, output says: Request was throttled. Try sending fewer requests. Key =(keycensored)

Guys, i hope you really help me, because i create my game so long and i tired, i was created a big count of models and now i write a scripts, so if this script did not work, i need to destroy a lot of my models.

Thanks from future.