Thing with GUI and Camera manipulation script doesn't work please help?

I have a Script that lets you start with a certain camera position, doesn't let you move, and lets you move again when you press "play"

It gives an error message at line 20 saying that Character is not a valid member of Players How do I fix this?

The play button script:

script.Parent.MouseEnter:connect(function()
	for i = 1, 10 do
		script.parent.BorderSizePixel = script.Parent.BorderSizePixel  +1
		wait(0.01)
	end
end)

script.Parent.MouseLeave:connect(function()
	for i = 1, 10 do
		script.parent.BorderSizePixel = script.Parent.BorderSizePixel  -1
		wait(0.01)
	end
end)

script.Parent.MouseButton1Down:connect(function()
	script.parent.Visible = false
	            script.Parent.Parent.Parent.StartLock.Disabled = true
	       game.Workspace.CurrentCamera.CameraType = Enum.CameraType.Custom
	local plr = script.Parent.Parent.Parent.Parent.Parent.Parent
	plr.Character.Humanoid.PlatformStand = false
	plr.Character.MoveTo(game.Workspace.Baseplate.Position)
	plr.Character.Torso.Anchored = false
	plr.Character.Humanoid.PlatformStand = false
	
	
	
end)

while true do
	if script.parent.BorderSizePixel > 11 then script.parent.BorderSizePixel = 11
		
	end
	wait(0.1)
end

The you can't move script:

local Player = game.Players.LocalPlayer
local Cam = workspace.CurrentCamera
local Target = Player.Character.Torso
Cam.CameraType = Enum.CameraType.Scriptable
Cam.CameraSubject = Player.Character.Torso

while true do
	Cam.CoordinateFrame = CFrame.new(Target.Position) * CFrame.Angles(0,3.2,0) * CFrame.new(-2,0,5)
		
	
	wait(0.1)
end

All of these scripts are located in playerGUI

And the play button script is located in a gui called "Startgui"

I really don't understand what's wrong, please help