Why isn't my team sorting function working in my module script?

So this is an addition to my last script with the mapVoting / timer. I added a splittingPlayers function that is supposed to sort players into different teams, though when I had it completely done, an error occurred that said: "exhausted allowed execution time." I assumed this meant that the script itself was too long, so I moved the splittingPlayers function to a module script and tried to call it, but now I am receiving the error: "attempt to call a nil value." I am not surprised though since I probably made this function in the most inefficient way possible, but this was the only way I knew how to do it.

Here are some details:

-the "Spotters" team is supposed to have fewer players than the fugitives, and depending on how many players are in the server (playernum >= 12, playernum < 12 and playernum >= 8, etc.) a certain amount of players are randomly picked for this team every round.

-The Module script and the script that uses the splittingPlayers function are both in ServerScriptService.

-The script that uses the function is a normal script.

-There are no script analysis errors

If you know a better way to go about this or if you can find an error with my function, please let me know

Thank you.

local playernum = game:WaitForChild("Players").NumPlayers
local splitPlayers = {}



function splitPlayers.splttingPlayers()
    --Splitting the teams
    local AllPlayers = game:WaitForChild("Players"):GetPlayers()
    if playernum >= 12 then
        local spotter1 = AllPlayers[math.random(1, #AllPlayers)]
        local spotter2 = AllPlayers[math.random(1, #AllPlayers)]
        local spotter3 = AllPlayers[math.random(1, #AllPlayers)]
        local spotter4 = AllPlayers[math.random(1, #AllPlayers)]
        if spotter2 == spotter1 then
            repeat
                spotter2 = AllPlayers[math.random(1, #AllPlayers)]
            until spotter2 ~= spotter1
        end
        if spotter3 == spotter1 or spotter3 == spotter2 then
            repeat
                spotter3 = AllPlayers[math.random(1, #AllPlayers)]
            until spotter3 ~= spotter1 and spotter3 ~= spotter2
        end
        if spotter4 == spotter1 or spotter4 == spotter2 or spotter4 == spotter3 then
            repeat
                spotter4 = AllPlayers[math.random(1, #AllPlayers)]
            until spotter4 ~= spotter1 and spotter4 ~= spotter2 and spotter4 ~= spotter3
        end
        spotter1.Team = game:WaitForChild("Teams").Spotters
        spotter2.Team = game:WaitForChild("Teams").Spotters
        spotter3.Team = game:WaitForChild("Teams").Spotters
        spotter4.Team = game:WaitForChild("Teams").Spotters
    elseif playernum < 12 and playernum >= 8 then
        local spotter1 = AllPlayers[math.random(1, #AllPlayers)]
        local spotter2 = AllPlayers[math.random(1, #AllPlayers)]
        local spotter3 = AllPlayers[math.random(1, #AllPlayers)]
        if spotter2 == spotter1 then
            repeat
                spotter2 = AllPlayers[math.random(1, #AllPlayers)]
            until spotter2 ~= spotter1
        end
        if spotter3 == spotter1 or spotter3 == spotter2 then
            repeat
                spotter3 = AllPlayers[math.random(1, #AllPlayers)]
            until spotter3 ~= spotter1 and spotter3 ~= spotter2
        end
        spotter1.Team = game:WaitForChild("Teams").Spotters
        spotter2.Team = game:WaitForChild("Teams").Spotters
        spotter3.Team = game:WaitForChild("Teams").Spotters
    elseif playernum < 8 and playernum >= 4 then
        local spotter1 = AllPlayers[math.random(1, #AllPlayers)]
        local spotter2 = AllPlayers[math.random(1, #AllPlayers)]
        if spotter2 == spotter1 then
            repeat
                spotter2 = AllPlayers[math.random(1, #AllPlayers)]
            until spotter2 ~= spotter1
        end
        spotter1.Team = game:WaitForChild("Teams").Spotters
        spotter2.Team = game:WaitForChild("Teams").Spotters
    elseif playernum < 4 then
        local spotter1 = AllPlayers[math.random(1, #AllPlayers)]
        spotter1.Team = game:WaitForChild("Teams").Spotters
    end
    wait(0.1)
    local lobbyNum = game:WaitForChild("Teams"):WaitForChild("Lobby"):GetPlayers()
    repeat
        local player = AllPlayers[math.random(1, #AllPlayers)]
        if player.Team == game:WaitForChild("Teams").Lobby then
            player.Team = game:WaitForChild("Teams").Fugitives
        end
    until lobbyNum == 0
end

return splitPlayers