Why does my output say "Workspace.Doors.Model.Main:5: attempt to index nil with 'Character'"?

I'm trying to make an animated E to open door script, but when I try to press e, on the output, it displays the error: "Workspace.Doors.Model.Main:5: attempt to index nil with 'Character'". Here is the script below:

local Can = true
local Open = false

script.Parent.Event.OnServerEvent:Connect(function(Player)
	local Mag = (script.Parent.Center.Position-game.Players.LocalPlayer.Character.HumanoidRootPart.Position).magnitude
	if Mag <= script.Parent.Range.Value then
		if Can then
			Can = false
			if Open == false then
				local Finish = script.Parent.PrimaryPart.CFrame*CFrame.Angles(0,math.rad(90),0)
				for i = 0,1,.1 do
					local CFM = script.Parent.PrimaryPart.CFrame:lertp(Finish,i)
					script.Parent:SetPrimaryPartCFrame(CFM)
					wait()
				end
				Open = true
			else
				Open = false
				local Finish = script.Parent.PrimaryPart.CFrame*CFrame.Angles(0,-math.rad(90),0)
				for i = 0,1,.1 do
					local CFM = script.Parent.PrimaryPart.CFrame:lertp(Finish,i)
					script.Parent:SetPrimaryPartCFrame(CFM)
					wait()
				end
			end
			Can = true
		end
	end
end)

According to the error, this is the line that triggers the error:

local Mag = (script.Parent.Center.Position-game.Players.LocalPlayer.Character.HumanoidRootPart.Position).magnitude

This is a similar post to another post I made, which I tried to fix but did not work. Can someone help me out why this occurs? Thanks!

You can not use localplayer on server-sided scripts, rather try making use of the Player parameter with it's set argument. So remove the game.Players.LocalPlayer and do

local Mag = (script.Parent.Center.Position - Player.Character.HumanoidRootPart.Position).Magnitude

Hopefully this helps

@DeUltimate23 it does not fix the issue, the output is not showing any errors for the door, but the door does not open. Here are the scripts used for the door:

LocalScript, located in StarterGui, ScreenGui:

local WaitLocalPlayer = game.Players.LocalPlayer.Character:WaitForChild("HumanoidRootPart")

local UIS = game:GetService("UserInputService")
UIS.InputBegan:Connect(function(i, g)
	if i.UserInputType == Enum.UserInputType.Keyboard then
		if i.KeyCode == Enum.KeyCode.E then
			for _, Door in pairs(workspace.Doors:GetChildren()) do
				local Mag = (Door.Center.Position-game.Players.LocalPlayer.Character.HumanoidRootPart.Position).magnitude
				if Mag <= Door.Range.Value then
					Door.Event:FireServer()
					break
				end
			end
		end
	end
end)

while true do
	script.Parent.ImageLabel.Visible = false
	for _, Door in pairs(workspace.Doors:GetChildren()) do
		local Mag = (Door.Center.Position-game.Players.LocalPlayer.Character.HumanoidRootPart.Position).magnitude
		if Mag <= Door.Range.Value then
			local D3ToD2 = workspace.CurrentCamera:WorldToScreenPoint(Door.Center.Position)
			script.Parent.ImageLabel.Visible = true
			script.Parent.ImageLabel.Position = UDim2.new(0,D3ToD2.X,0,D3ToD2.Y,0)
			break
		end
	end
	wait()
end

Normal script, named "Main", located in game.Workspace.Doors.Model

local Can = true
local Open = false

script.Parent.Event.OnServerEvent:Connect(function(Player)
	local Mag = (script.Parent.Center.Position - Player.Character.HumanoidRootPart.Position).Magnitude
	if Mag <= script.Parent.Range.Value then
		if Can then
			Can = false
			if Open == false then
				local Finish = script.Parent.PrimaryPart.CFrame*CFrame.Angles(0,math.rad(90),0)
				for i = 0,1,.1 do
					local CFM = script.Parent.PrimaryPart.CFrame:lertp(Finish,i)
					script.Parent:SetPrimaryPartCFrame(CFM)
					wait()
				end
				Open = true
			else
				Open = false
				local Finish = script.Parent.PrimaryPart.CFrame*CFrame.Angles(0,-math.rad(90),0)
				for i = 0,1,.1 do
					local CFM = script.Parent.PrimaryPart.CFrame:lertp(Finish,i)
					script.Parent:SetPrimaryPartCFrame(CFM)
					wait()
				end
			end
			Can = true
		end
	end
end)