Random error on simple code

[lostresosostedyIII (Server)]

I have a simple optimization script, that makes every part with a material in the game become Plastic.

The code DOESN’T work, and it errors:

The current thread cannot access ‘StreamingService’ (lacking capability Assistant) - Client

I have found no solution for this error so far. I hope someone can help me.

For anyone wondering, this is the code

local TimesClicked = 1
script.Parent.MouseButton1Click:Connect(function(Optimize)

		if TimesClicked== 1 then
			local TableForPreviousMaterials = {}

		
			for i, children in pairs(game:GetDescendants())do
									if children.ClassName == "MeshPart" or children.ClassName == "BasePart" or children.ClassName == "UnionOperation" then
						TableForPreviousMaterials [children] = children.Material
					end
				end
		
			function UndoOptimization(material)
				for part, StoredMaterial in pairs(TableForPreviousMaterials) do		
					part.Material = material or StoredMaterial
				end
			end
			UndoOptimization(Enum.Material.Plastic)
			TimesClicked= 2
		if TimesClicked== 2 then
			UndoOptimization(nil)
			TimesClicked= 1
		end
		end
end)

[Bikereh (green_lady)]

what line is the errorrrr on?

also click this “format document”

[lostresosostedyIII (Server)]

Ninth line, it says.

COULD YOU FORMAT? I DID IT BY HAND

local numero = 1
script.Parent.MouseButton1Click:Connect(function(goofy)

	if numero == 1 then
		local materials = {}


		for i, children in pairs(game:GetDescendants())do
			if children.ClassName == "MeshPart" or children.ClassName == "BasePart" or children.ClassName == "UnionOperation" then
				materials[children] = children.Material
			end
		end

		function UndoOptimization(material)
			for part, savedMaterial in pairs(materials) do		
				part.Material = material or savedMaterial
			end
		end
		UndoOptimization(Enum.Material.Plastic)
		numero = 2
		if numero == 2 then
			UndoOptimization(nil)
			numero = 1
		end
	end
end)

[neviquatro (nevi)]

@lostresosostedyIII

game:GetDescendants()

You should be doing

game.Workspace:GetDescendants()

Full:

local numero = 1
script.Parent.MouseButton1Click:Connect(function(goofy)

	if numero == 1 then
		local materials = {}


		for i, children in pairs(game.Workspace:GetDescendants())do
			if children.ClassName == "MeshPart" or children.ClassName == "BasePart" or children.ClassName == "UnionOperation" then
				materials[children] = children.Material
			end
		end

		function UndoOptimization(material)
			for part, savedMaterial in pairs(materials) do		
				part.Material = material or savedMaterial
			end
		end
		UndoOptimization(Enum.Material.Plastic)
		numero = 2
		if numero == 2 then
			UndoOptimization(nil)
			numero = 1
		end
	end
end)

[Bikereh (green_lady)]

@lostresosostedyIII

									if children.ClassName == "MeshPart" or children.ClassName == "BasePart" or children.ClassName == "UnionOperation" then
						TableForPreviousMaterials [children] = children.Material
					end

change that to this aswell, also do what the other guy says

if children:IsA("BasePart") then
	TableForPreviousMaterials [children] = children.Material
end

[astrovue]

I feel this error is connected to ROBLOX’s script capabilities preview.

Do you have Script Capabilities enabled in your Beta Features? If you do, then disable it.

Script Capabilities Preview [Client Beta]

Hello everyone! Today we would like to announce a preview release of “Script Capabilities,” a new feature designed to give you finer control over actions that scripts can perform in your experience. What Are Script Capabilities? The system works by transforming an instance and its children inside the Data Model into a sandboxed container. With this new container you can: limit access to instances outside the container, configure access to Luau and engine APIs, limit in what context the scri…

[lostresosostedyIII (Server)]

No, I don’t have it enabled. Since the error mentions Assistant, I think it’s that. (no #### sherlock)

[robloxhehevoice (lolll)]

The current thread cannot access 'StreamingService' (lacking capability Assistant)

just wrap the if statement inside the loop into a pcall, it avoids the issue (literally just remembered pcalls existed lol)

I hope this helps, try using a pcall.

Lua Globals | Documentation - Roblox Creator Hub

@lostresosostedyIII

[lostresosostedyIII (Server)]

Thank you!

[robloxhehevoice (lolll)]

did it work? I really hope it did, good luck!!!

[lostresosostedyIII (Server)]

It did!