I know this is a stupid question, but this problem has been pretty annoying lately. The script works perfectly but I don't know why its filling my output with errors. There is nothing wrong with my script.

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local PlaceStructure = ReplicatedStorage:WaitForChild("PlaceStructure")
local Structures = ReplicatedStorage:WaitForChild("Structures")

local UIS = game:GetService("UserInputService")
local RunService = game:GetService("RunService")

local player = game.Players.LocalPlayer
local structureFrame = script.Parent.StructuresFrame
local char = player.Character or player.Character:Wait()
local HumanoidRootPart = char:WaitForChild("HumanoidRootPart")

local mouse = player:GetMouse()

local yBuildingOffset = 5
local maxPlacingDistance = 50
local rKeyIsPressed = false
local placingStructure = false

for _, structureButton in pairs(structureFrame:GetChildren()) do
	if structureButton:IsA("TextButton") then
		structureButton.MouseButton1Up:Connect(function()
			
			structureFrame.Visible = false
			
			local yOrientation = 0
			local goodToPlace = false
			local placedStructure
			
			if placingStructure == false then
				placingStructure = true
				
				local clientStructure = Structures:FindFirstChild(structureButton.Name):Clone()
				for _, partsInStructure in pairs(clientStructure:GetChildren()) do
					if partsInStructure:IsA("Part") or partsInStructure:IsA("UnionOperation") then
						partsInStructure.BrickColor = BrickColor.new("Cyan")
						partsInStructure.Material = Enum.Material.Wood
						partsInStructure.Transparency = 0.6
						partsInStructure.CanCollide = false
					end
				end
				
				clientStructure.Parent = workspace
				
				local startingCFrame = CFrame.new(0, -2, -15)
				clientStructure:SetPrimaryPartCFrame(HumanoidRootPart.CFrame:ToWorldSpace(startingCFrame))
				
				RunService.RenderStepped:Connect(function()
					local mouseRay = mouse.UnitRay
					local castRay = Ray.new(mouseRay.Origin, mouseRay.Direction * 1000)
					local ignoreList = {clientStructure, char}
					local hit, position = workspace:FindPartOnRayWithIgnoreList(castRay, ignoreList)
					
					if hit and (hit:IsA("Terrain") or hit.Name:lower() == "terrain") and (HumanoidRootPart.Position - clientStructure:FindFirstChild("Main").Position).Magnitude < maxPlacingDistance then
						goodToPlace = true
						for _, StructureParts in pairs(clientStructure:GetChildren()) do
							if StructureParts:IsA("Part") or StructureParts:IsA("UnionOperation") then
								StructureParts.BrickColor = BrickColor.new("Cyan")
							end
						end
					else
						goodToPlace = false
						for _, StructureParts in pairs(clientStructure:GetChildren()) do
							if StructureParts:IsA("Part") or StructureParts:IsA("UnionOperation") then
								StructureParts.BrickColor = BrickColor.new("Crimson")
							end
						end
					end
					
					local newAnglesCFrame = CFrame.Angles(0, math.rad(yOrientation), 0)
					local newCFrame = CFrame.new(position.X, position.Y + yBuildingOffset, position.Z)
					clientStructure:SetPrimaryPartCFrame(newCFrame * newAnglesCFrame)
				end)
				
				UIS.InputBegan:Connect(function(input)
					if input.KeyCode == Enum.KeyCode.R then
						rKeyIsPressed = true
						
						local rotationSpeed = 5
						while rKeyIsPressed do
							wait()
							if placingStructure == true then
								yOrientation = yOrientation + rotationSpeed
							end
						end
					end
				end)
				
				UIS.InputEnded:Connect(function(input)
					if input.KeyCode == Enum.KeyCode.R then
						rKeyIsPressed = false
					end
				end)
				
				UIS.InputBegan:Connect(function(input)
					if input.UserInputType == Enum.UserInputType.MouseButton1 then
						if placingStructure == true then
							if goodToPlace == true then
								local StructureCFrame = clientStructure:GetPrimaryPartCFrame()
								placedStructure = PlaceStructure:InvokeServer(clientStructure.Name, StructureCFrame)
								
								if placedStructure == true then
									placingStructure = false
									clientStructure:Destroy()
									structureFrame.Visible = true
								end
							end
						end
					end
				end)
			end
		end)
	end
end
Anonymous