Hello, I am having a problem with the AnimationTrack instance. It seems not to be playing when the humanoid is running. (By the way, I don't Use UserInputService.InputBegan because when the player holds 2 keys, the animation stops. I use Humanoid.StateChanged because this is accurate of the current humanoid status, meaning that it will be always correct. Used pcall to catch errors.) (I also called it "Animate" so it overrode the default animation script, on a local script)

Everything still is working fine, the pcall return, the StateChanged event, the RemoteEvent to the server.. (Also I just used the server to change the humanoid's WalkSpeed value and this allows it to be FE (Or is player WalkSpeed already FE? I also used the server for client sanity checks.)

Here is the client-sided code:

	local players = game.Players
local player = players.LocalPlayer
local char = player.Character or player.CharacterAdded:Wait()
local animwalk = script:WaitForChild("Animation")
local humanoid = char:WaitForChild("Humanoid")

local loadwalk = humanoid.Animator:LoadAnimation(animwalk)

humanoid.StateChanged:Connect(function(old, new)
	if new == Enum.HumanoidStateType.Running then
		local succ, err = pcall(function()
			print("anim playing")
			loadwalk:Play()
			wait(5)
			game.ReplicatedStorage.OnWalkBoostSpeedRequest:FireServer(humanoid, speed)
		end)
		if succ then
			print("Success!")
		end
		if err then
			print("Something is wrong!")
		end
	else
		print("Not Running!")
	end
	if new == Enum.HumanoidStateType.Jumping then
		print("Player is jumping")
		loadwalk:Stop()
	end
end)

Finally, the server-sided code:

game.ReplicatedStorage.OnWalkBoostSpeedRequest.OnServerEvent:Connect(function(player, humanoidPassed, speedPassed)
	local succ, err = pcall(function()
		if humanoidPassed.WalkSpeed == 16 then
			humanoidPassed.WalkSpeed = humanoidPassed.WalkSpeed + 4
		else
			wait(4)
			if humanoidPassed.WalkSpeed == 16 then
				print("Changed back")
			else
				print("Changing players walkspeed back to default..")
				humanoidPassed.WalkSpeed = 16
			end
		end
	end)
	if succ then
		print("Success!")
	elseif err then
		print("There seems to be a error, go check it out: "..err)
	end
end)

I don't know why it isn't working. The whole scripts got saved, so its unexplainable for me how it stopped working. Thank you for reading this.