HumanoidRootPart is not a valid member of Model "Workspace.ProSto3523"

Help and Feedback Scripting Support
#1

So i making a character following the mouse and i got this error
Script:

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local camera = workspace.Camera


local rotationSpeed = 5 
local maxLookUpAngle = math.rad(80) 


local function RotateCharacter()
	local mousePosition = player:GetMouse().X
	local characterPosition = character:WaitForChild("HumanoidRootPart").Position


	local angle = math.atan2(mousePosition - characterPosition.X, characterPosition.Z - characterPosition.Z)

	local cameraRotation = workspace.CurrentCamera.CFrame
	local cameraLookUpAngle = cameraRotation:ToEulerAnglesYXZ()
	local clampedAngle = math.clamp(cameraLookUpAngle, -maxLookUpAngle, 0)
	local rotation = CFrame.Angles(clampedAngle, angle, 0)

	character:SetPrimaryPartCFrame(character.PrimaryPart.CFrame:lerp(rotation, rotationSpeed))
end

game:GetService("RunService").RenderStepped:Connect(RotateCharacter)
#2

try this code, it checks if humroot exists

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local camera = workspace.Camera


local rotationSpeed = 5 
local maxLookUpAngle = math.rad(80) 


local function RotateCharacter()
	local mousePosition = player:GetMouse().X

        if character:FindFirstChild("HumanoidRootPart")  then
   
	local characterPosition = character:WaitForChild("HumanoidRootPart").Position


	local angle = math.atan2(mousePosition - characterPosition.X, characterPosition.Z - characterPosition.Z)

	local cameraRotation = workspace.CurrentCamera.CFrame
	local cameraLookUpAngle = cameraRotation:ToEulerAnglesYXZ()
	local clampedAngle = math.clamp(cameraLookUpAngle, -maxLookUpAngle, 0)
	local rotation = CFrame.Angles(clampedAngle, angle, 0)

	character:SetPrimaryPartCFrame(character.PrimaryPart.CFrame:lerp(rotation, rotationSpeed))
    end
end

game:GetService("RunService").RenderStepped:Connect(RotateCharacter)
#3

local characterPosition = character.PrimaryPart.Position