I'm confused, My bot Ai suddenly stopped working, any help?

Hi,

I've made a bot that wonders around to set locations and then the other day (even though I did nothing to the script) it keeps coming up with the following output error and I can't figure out why. For some reason it's unable to calculate a path?

Here's the script I have:

local PathfindingService = game:GetService("PathfindingService")

-- Variables for the zombie, its humanoid, and destination
local zombie = script.Parent
local humanoid = zombie.Humanoid
local locfolder = script.Parent.Parent.OPoints
--local count
local continuee
local destination 

-- Create the path object
local path = PathfindingService:CreatePath()

-- Variables to store waypoints table and zombie's current waypoint
local waypoints
local currentWaypointIndex

local function followPath(destinationObject)
	print("follow path recieved")
	script.Parent.PrimaryPart:SetNetworkOwner(nil)
	-- Compute and check the path
	path:ComputeAsync(zombie.HumanoidRootPart.Position, destinationObject.Position)
	-- Empty waypoints table after each new path computation
	waypoints = {}

	if path.Status == Enum.PathStatus.Success then
		print("Success calc")
		-- Get the path waypoints and start zombie walking
		waypoints = path:GetWaypoints()
		-- Move to first waypoint
		currentWaypointIndex = 1
		humanoid:MoveTo(waypoints[currentWaypointIndex].Position)
	else
		print("Error calculating")
		-- Error (path not found); stop humanoid
		humanoid:MoveTo(zombie.HumanoidRootPart.Position)
	end
end

local function onWaypointReached(reached)
	print("Waypoint reached")
	if reached and currentWaypointIndex < #waypoints then -- this is the line that the error appears from
		currentWaypointIndex = currentWaypointIndex + 1
		humanoid:MoveTo(waypoints[currentWaypointIndex].Position)
	elseif reached and currentWaypointIndex == #waypoints then
		continuee = true
		--wait(5)
	end
end

local function onPathBlocked(blockedWaypointIndex)
	print("Path Blocked")
	-- Check if the obstacle is further down the path
	if blockedWaypointIndex > currentWaypointIndex then
		-- Call function to re-compute the path
		continuee = true
		--wait(5)
		followPath(destination)
	end
end

-- Connect 'Blocked' event to the 'onPathBlocked' function
path.Blocked:Connect(onPathBlocked)

-- Connect 'MoveToFinished' event to the 'onWaypointReached' function
humanoid.MoveToFinished:Connect(onWaypointReached)

--followPath(destination)
--local function 


--wait(30)
while true do
	--wait(5)
	--wait(15)
	continuee = false
	print("Follow Path Sent")
	locfolderLength = locfolder:GetChildren()
	for i = 1, #locfolderLength do
		print(i)
		destination = locfolder[i]
		followPath(destination)
		repeat wait() until continuee == true
		continuee = false
		wait(2)
	end
end

and Here's the output after running for about 30 seconds:

  12:29:34.937  Follow Path Sent  -  Server - OBot:77
  12:29:34.937  1  -  Server - OBot:80
  12:29:34.938  follow path recieved  -  Server - OBot:19
  12:29:54.994  Error calculating  -  Server - OBot:34
  12:29:54.999  Waypoint reached  -  Server - OBot:41
  12:29:54.999  Workspace.Rig.Ophelia.OBot:42: attempt to compare nil < number  -  Server - OBot:42
  12:29:54.999  Stack Begin  -  Studio
  12:29:54.999  Script 'Workspace.Rig.Ophelia.OBot', Line 42 - function onWaypointReached  -  Studio - OBot:42
  12:29:55.000  Stack End  -  Studio

I'm completely stumped. Any suggestions on how to fix this will be highly appreciated.

Thanks, Aidan

For anyone wondering, there was an issue with some other seemingly random script that caused this not to work. Now just trying to figure out a new way to make that other script work...