Car spawning script gives error

The SelectedCar isn’t nil when you print it. The button is a client script that fires a remote event saying what car it is to spawn and then a server script takes that and spawns that car.

Client (Button):

script.Parent.MouseButton1Up:Connect(function(player)
	local SelectedCar = game.ReplicatedStorage.CarSystem.SelectedCar.Value
	print(SelectedCar)

	game:GetService("ReplicatedStorage").VehicleSpawnRequest:FireServer(SelectedCar)
end)

Server (On Event Fire):

local RS = game:GetService("ReplicatedStorage")
	

RS.VehicleSpawnRequest.OnServerEvent:Connect(function(SelectedCar, player)
	local Car = SelectedCar
	local CloneCar = Car:Clone(player)
	local Position1 = game.Workspace["Civilian Spawn"].CarSpots.S1.Position
	local Position2 = game.Workspace["Civilian Spawn"].CarSpots.S2.Position
	local Position3 = game.Workspace["Civilian Spawn"].CarSpots.S3.Position
	local Position4 = game.Workspace["Civilian Spawn"].CarSpots.S4.Position
	local Position5 = game.Workspace["Civilian Spawn"].CarSpots.S5.Position
	local PossibleSpawns = {Position1, Position2, Position3, Position4, Position5}
	
	if Car then
		
	else
		print("Car not selected")
	end
	

	CloneCar.Parent = game.Workspace.Vehicles
	CloneCar:SetPrimaryPartCFrame(CFrame.new(PossibleSpawns[math.random(1, #PossibleSpawns)]))
end)