How do i make 2x cash gamepass script Roblox - lua

Question

So I was making a script that gives you 5 cash every minute, I also made a game pass for the script if someone owns the game pass they get double money as the Non-game pass holders. Here is my script
I Haven't any scripts to give cash but the problem is in the 2nd script block, the console print an error :
  09:10:57.466 ServerScriptService.CashGiver:6: attempt to index nil with 'UserId' - Server - CashGiver:6
local Give5Cash = game.ReplicatedStorage:WaitForChild("Give5Cash")
local Give10Cash = game.ReplicatedStorage:WaitForChild("Give10Cash")
Give5Cash.OnServerEvent:Connect(function()
print("Player Will Be Given 5 Cash")
end)
Give10Cash.OnServerEvent:Connect(function()
print("Player Will Be Given 10 Cash")
end)
while wait() do
local MPS = game:GetService("MarketplaceService")
local id = 16031172
local player = game.Players.LocalPlayer
if MPS:UserOwnsGamePassAsync(player.UserId, id) then
game.ReplicatedStorage:WaitForChild("Give10Cash"):FireServer()
print("Player Owns 2x Cash")
else
print("Players Doesnt Owns 2x Cash")
game.ReplicatedStorage:WaitForChild("Give5Cash"):FireServer()
end
wait(5)
end

Answer 1

local player = Players.LocalPlayer
if MPS:UserOwnsGamePassAsync(player.UserId, id) then
...
Here you assign a nil value to player which you may not index but do.
From the Roblox manual:
Players.LocalPlayer
NotReplicated
This item is not replicated across Roblox’s server/client boundary.
LocalPlayer is a read-only property which refers to the Player whose
client is running the game.
This property is only defined for LocalScripts (and ModuleScripts
required by them), as they run on the client. For the server (on which
Script objects run their code), this property is nil.

Answer 2

So I figured out a way to solve this issue and I have got the answer for my question.
Here is how I did it I made 3 scripts in ServerScriptService with the name of CashGiver5, CashGiver10, and CashGiverHandler
here are the scripts I added to each script.
CashGiver5:
while wait(1) do
print("Giving Player 5 Cash ")
for i, player in pairs(game.Players:GetPlayers()) do
player:WaitForChild("leaderstats").Cash.Value += 5
end
end
CashGiver10:
while wait(1) do
print("Giving Player 10 Cash ")
for i, player in pairs(game.Players:GetPlayers()) do
player:WaitForChild("leaderstats").Cash.Value += 10
end
end
CashGiverHandler:
local MarketPlace = game:GetService("MarketplaceService")
game.Players.PlayerAdded:Connect(function(player)
local g = 16031172 -- DOUBLE CASH ID
local Give5Script = game.ServerScriptService.CashGiver5
local Give10Script = game.ServerScriptService.CashGiver10
if MarketPlace:UserOwnsGamePassAsync(player.UserId, g) then
Give5Script:Destroy()
else
Give10Script:Destroy()
end
end)
WHAT THE SCRIPT DOES?
So basically the CashGiver scripts are basic scripts giving player Cash every second.
so the Handler script Destroys one of the scripts (s) when a player is added to the game.