Attempt to call a number value????

I was trying to script a code that teleports players to a certain area when a timer finishes, and from nowhere, when I call the function minutes() its says: Attempt to call a number value.

Please help me.

local timerREM = game.ReplicatedStorage.Timer_RemoteEvent
local Totaltime = {00, 10}  -- For changing the total time of the timer, change the 1st (minutes) and 2nd (seconds) value --
local minutesval = Totaltime[1]
local secondsval = Totaltime[2]
local totaltime = tostring(minutesval.. ": ".. secondsval)

local function minutes()  -- Important Part
	minutesval = minutesval - 1
	totaltime = tostring(minutesval.. ": ".. secondsval)
	timerREM:FireAllClients(totaltime)
end

local function seconds()
	if minutesval == 0 and secondsval == 0 then
		print("The players are spawning again")
		local players = game.Players:GetChildren()
		local PlayerCharacters = {}
		local spawns = game.Workspace.Spawns
		
		for i, player in pairs (players) do
			table.insert(PlayerCharacters, #PlayerCharacters + 1, player.Character)
		end

		for i, v in pairs(PlayerCharacters) do
			local desiredSpawn = math.random(1, 12)

			v.HumanoidRootPart.Position = Vector3.new(spawns[desiredSpawn].Position + spawns[desiredSpawn].Size/2)
		end
		
		totaltime = tostring(Totaltime[1].. ": ".. Totaltime[2])
		minutes = Totaltime[1]
		seconds = Totaltime[2]
	end
	if secondsval == 0 then -- Here is the error -- 
		secondsval = 60
		minutes()
	end
	secondsval = secondsval - 1
	totaltime = tostring(minutesval.. ": ".. secondsval)
	timerREM:FireAllClients(totaltime)
end

while true do
	local times = 0
	while times < 60 do
	    times = times + 1
		wait(1)
		seconds()
	end
end

The thing is that when I call the function seconds() the script doesnt says there's an error.

This ocurred to me much times, like when I was trying to tween a GUI's position, and when calling functions.