I am attempting to make a sprint button for mobile, but the button will not show up and I get this warning from the console.

20:39:27.137 - LastInputType change listener called with current type

Does the warning relate to the problem, what needs to be changed in the code below?

local mouse = game.Players.LocalPlayer:GetMouse()
local running = false
local char = script.Parent.Parent.Character
local RunningSpeed = char:WaitForChild("RunningSpeed")
local WalkingSpeed = char:WaitForChild("WalkingSpeed")
local RunVal = RunningSpeed.Value
local WalkVal = WalkingSpeed.Value
local UserInputService = game:GetService("UserInputService")
local isPressed = false
local plr = game.Players.LocalPlayer
local Char = plr.Character or plr.CharacterAdded:Wait()
local Animate = char:WaitForChild('Animate')
local RunAnim = Animate.run:WaitForChild('RunAnim')
local Humanoid = Char:WaitForChild('Humanoid')
local LoadRunAnim = Humanoid:LoadAnimation(RunAnim)
local ContextAction = game:GetService("ContextActionService")

function Sprinting(name, inputState, inputObject)
if inputState ~= Enum.UserInputState.Begin then return end
    if isPressed == false then
	    isPressed = true
	    Char.Humanoid.WalkSpeed = RunningSpeed.Value
	    game.Workspace.CurrentCamera.FieldOfView = 72
    elseif isPressed == true then
	    isPressed = false
	    game.Workspace.CurrentCamera.FieldOfView = 70
	    Char.Humanoid.WalkSpeed = WalkingSpeed.Value
    end
end
ContextAction:BindActionToInputTypes("Sprint",Sprinting,true)
ContextAction:SetTitle("Sprint", "Sprint")
Anonymous