Help!!! attempt to index field 'Character' (a nil value)

local replicatedstorage = game:GetService('ReplicatedStorage')
local status = replicatedstorage:WaitForChild('InfoValue')
local mapstorage = game.Workspace:WaitForChild('mapStorage')

while true do
    --[[
    while game.Players.NumPlayers > 2 do
        status.Value = 'There needs to be 2 or more players to begin'
        repeat wait(2) until game.Players.NumPlayers >= 2
    end
    ]]
    for i = 20,0,-1 do
        status.Value = 'Intermission '..i
        wait(1)
    end

    local mapinserverstorage = game:GetService('ServerStorage'):GetChildren()
    local chosenmap = mapinserverstorage[math.random(1, #mapinserverstorage)]
    chosenmap:Clone().Parent = mapstorage
    status.Value = 'Get ready to be teleported'
    wait(3)
    local spawns = chosenmap:WaitForChild('Spawns'):GetChildren()
    for_, player = pairs(game.Players:GetPlayers()) do
        if player and #spawns > 0 then
            local UpperTorso = player.Character:WaitForChild('UpperTorso')
            local LowerTorso = player.Character:WaitForChild('LowerTorso')
            local allspawns = math.random(1, #spawns)
            local randomspawn = spawns[allspawns]
            if randomspawn and UpperTorso and LowerTorso then
                table.remove(spawns, allspawns)
                UpperTorso.CFrame = CFrame.new(randomspawn.Position + Vector3.new(0,2,0))
                LowerTorso.CFrame = CFrame.new(randomspawn.Position + Vector3.new(0,2,0))
            end
        end
    end

    wait(120)




    mapstorage:ClearAllChildren()
end