RemoteEvent does not want to work properly, giving an error?

Hi, I'm making a pick-up system but it doesn't work. There will be an error.

Client script:

local Player = game:GetService("Players").LocalPlayer

local Mouse = Player:GetMouse()

local ReplicatedStorage = game:GetService("ReplicatedStorage")

local RemoteEvent = ReplicatedStorage:WaitForChild("LootPickup")

Mouse.Button1Down:Connect(function()

    RemoteEvent:FireServer(Player, Mouse)
end)

Server script:

local ReplicatedStorage = game:GetService("ReplicatedStorage")

local RemoteEvent = ReplicatedStorage:WaitForChild("LootPickup")

RemoteEvent.OnServerEvent:Connect(function(Player, Mouse)

    if Player then

        local Target = Mouse.Target

        if Target:FindFirstChild("Loot") then

            Target:Destroy()

            print("Succesfully picked up loot.")
        end
    end
end)

Error: Target is not a valid member of Player, line 11 in the Server script.