attempt to index nil with 'Rarity' help me pls?

attempt to index nil with 'Rarity'

Error: Players.OsipStar4ik.PlayerGui.MainGui.Shop.CaseDisplay.Container.Manager:53: attempt to index nil with 'Rarity'

Please help me!!

-- goro7

-- Basic settings
local FADED_COLOR = Color3.fromRGB(60, 60, 60)

local plr = game.Players.LocalPlayer

local commonColor = plr:WaitForChild("PlayerScripts"):WaitForChild("Functions"):WaitForChild("GetRarityColor"):Invoke("Common")
local uncommonColor = plr:WaitForChild("PlayerScripts"):WaitForChild("Functions"):WaitForChild("GetRarityColor"):Invoke("Uncommon")
local rareColor = plr:WaitForChild("PlayerScripts"):WaitForChild("Functions"):WaitForChild("GetRarityColor"):Invoke("Rare")
local legendaryColor = plr:WaitForChild("PlayerScripts"):WaitForChild("Functions"):WaitForChild("GetRarityColor"):Invoke("Legendary")
local godlyColor = plr:WaitForChild("PlayerScripts"):WaitForChild("Functions"):WaitForChild("GetRarityColor"):Invoke("Godly")

function sortByName(x, y)
	
	-- Convert to lowercase
	local xString = string.lower(x.Value.Name)
	local yString = string.lower(y.Value.Name)
	
	-- Convert to byte values
	local xBytes = {}
	for i=1, string.len(xString) do
		table.insert(xBytes, string.byte(xString, i, i))
	end
	local yBytes = {}
	for i=1, string.len(yString) do
		table.insert(yBytes, string.byte(yString, i, i))
	end
	
	-- See if Y ever less than up X
	local xIsLess = false
	for i=1, #yBytes do
		if table.getn(xBytes) < i then
			xIsLess = true
			break
		end
		if xBytes[i] < yBytes[i] then
			xIsLess = true
			break
		elseif xBytes[i] > yBytes[i] then
			break
		end
	end
	
	-- Return result
	return xIsLess
	
end

function sortByRarityAndName(x, y)
	
	-- Assign numbers for rarity
	local rarityX = plr.PlayerScripts.Functions.GetRarityValue:Invoke(x.Value.Rarity.Value)
	local rarityY = plr.PlayerScripts.Functions.GetRarityValue:Invoke(y.Value.Rarity.Value)
	
	-- Sort by name if same
	if rarityX == rarityY then
		return sortByName(x, y)
	end
	
	-- Return comparison
	return (rarityX > rarityY)
	
end

script.Parent.ShowCase.Event:connect(function(case)
	
	-- Delete all currently listed items
	for _, i in pairs(script.Parent:GetChildren()) do
		if i.Name == "Item" then
			i:destroy()
		end
	end
	
	-- Create an item for each
	local entries = case.Contents:GetChildren()
	table.sort(entries, sortByRarityAndName)
	for n, i in pairs(entries) do
		local item = i.Value
		local itemGui = script.Parent.ItemTemplate:clone()
		itemGui.Name = "Item"
		itemGui.Item.Value = item
		itemGui.ItemIcon.Image = item.IconAsset.Value
		itemGui.ItemName.Text = item.Name
		itemGui.ItemRarity.Text = item.Rarity.Value
		itemGui.ItemName.TextColor3 = plr.PlayerScripts.Functions.GetRarityColor:Invoke(item.Rarity.Value)
		itemGui.Position = UDim2.new(0, ((n - 1) % 4) * 100 + 10, 0, math.floor((n - 1) / 4) * 100 + 10)
		itemGui.Parent = script.Parent
		itemGui.Visible = true
		itemGui.InteractionHandler.Disabled = false
	end
	
	-- Size the scrolling frame
	script.Parent.CanvasSize = UDim2.new(0, 0, 0, math.ceil(#entries / 4) * 100 + 20)
	
	-- Disable preview
	plr.PlayerGui.MainGui.Shop.Preview.PixelVerticalOffset.Value = -5
	plr.PlayerGui.MainGui.Shop.Preview.Scale.Value = 24
	plr.PlayerGui.MainGui.Shop.Preview.Item.Value = entries[1].Value
	
	-- Set up main case sidebar items
	local caseSidebar = script.Parent.Parent.Parent.CaseSidebar
	caseSidebar.Visible = true
	caseSidebar.BuyButton.Case.Value = case
	caseSidebar.Price.Text = case.Price.Value .. "     "
	caseSidebar.Price.CoinImage.Position = UDim2.new(0.5, caseSidebar.Price.TextBounds.X / 2 - 13, 0, 4)
	
	-- Set percentages
	local total = case.CommonChance.Value + case.UncommonChance.Value + case.RareChance.Value + case.LegendaryChance.Value
	caseSidebar.CommonChance.Text = tostring((case.CommonChance.Value / total) * 100) .. "%"
	caseSidebar.UncommonChance.Text = tostring((case.UncommonChance.Value / total) * 100) .. "%"
	caseSidebar.RareChance.Text = tostring((case.RareChance.Value / total) * 100) .. "%"
	caseSidebar.LegendaryChance.Text = tostring((case.LegendaryChance.Value / total) * 100) .. "%"
	if case.GodlyChance.Value > 0 then
		caseSidebar.GodlyChance.Text = "???%"
	else
		caseSidebar.GodlyChance.Text = "0%"
	end
	
	-- Fade percentages if 0
	if caseSidebar.CommonChance.Text == "0%" then
		caseSidebar.CommonChance.TextColor3 = FADED_COLOR
		caseSidebar.CommonChance.Label.TextColor3 = FADED_COLOR
	else
		caseSidebar.CommonChance.TextColor3 = commonColor
		caseSidebar.CommonChance.Label.TextColor3 = commonColor
	end
	if caseSidebar.UncommonChance.Text == "0%" then
		caseSidebar.UncommonChance.TextColor3 = FADED_COLOR
		caseSidebar.UncommonChance.Label.TextColor3 = FADED_COLOR
	else
		caseSidebar.UncommonChance.TextColor3 = uncommonColor
		caseSidebar.UncommonChance.Label.TextColor3 = uncommonColor
	end
	if caseSidebar.RareChance.Text == "0%" then
		caseSidebar.RareChance.TextColor3 = FADED_COLOR
		caseSidebar.RareChance.Label.TextColor3 = FADED_COLOR
	else
		caseSidebar.RareChance.TextColor3 = rareColor
		caseSidebar.RareChance.Label.TextColor3 = rareColor
	end
	if caseSidebar.LegendaryChance.Text == "0%" then
		caseSidebar.LegendaryChance.TextColor3 = FADED_COLOR
		caseSidebar.LegendaryChance.Label.TextColor3 = FADED_COLOR
	else
		caseSidebar.LegendaryChance.TextColor3 = legendaryColor
		caseSidebar.LegendaryChance.Label.TextColor3 = legendaryColor
	end
	if caseSidebar.GodlyChance.Text == "0%" then
		caseSidebar.GodlyChance.TextColor3 = FADED_COLOR
		caseSidebar.GodlyChance.Label.TextColor3 = FADED_COLOR
	else
		caseSidebar.GodlyChance.TextColor3 = godlyColor
		caseSidebar.GodlyChance.Label.TextColor3 = godlyColor
	end
		
	-- Set visiblities
	script.Parent.Parent.Visible = true
	script.Parent.Parent.Parent.Display.Visible = false
	script.Parent.Parent.Parent.Sidebar.Visible = false
	
end)

script.Parent.ReturnToPreviousView.Event:connect(function()
	
	-- Show previous preview
	plr.PlayerGui.MainGui.Shop.Preview.PixelVerticalOffset.Value = -2
	plr.PlayerGui.MainGui.Shop.Preview.Scale.Value = 18
	plr.PlayerGui.MainGui.Shop.Preview.Item.Value = nil
	
	-- Set visiblities
	script.Parent.Parent.Visible = false
	script.Parent.Parent.Parent.CaseSidebar.Visible = false
	script.Parent.Parent.Parent.Display.Visible = true
	script.Parent.Parent.Parent.Sidebar.Visible = true
	
end)