I have a script where if there are no targets present then the AI will use the Pathfinding Service to get the children of a folder with markers and their positions to randomly roam a maze.
After one loop the Nodes delete themselves in workspace.
Here is the loop, the LoS and no other part of the script even mentions the Nodes.
Unless I am missing a Nodes = nil or something I do not know why it is deleting the nodes and not the folder even and would appreciate some help 
.
local Nodes = game.Workspace:WaitForChild("Nodes"):GetChildren()
function main()
local isChangingDestination = false
local db = false
local waypoints
local count = 1
path:ComputeAsync(enemy.HumanoidRootPart.Position, (Nodes[math.random(1,#Nodes)]).Position)
waypoints = path:GetWaypoints()
enemy.Humanoid:MoveTo(waypoints[count].Position)
isChangingDestination = true
while true do
local selectedTarget = losCheck()
if selectedTarget then
isTargeting = true
isChangingDestination = false
enemy.Humanoid:MoveTo(players:FindFirstChild(selectedTarget).Character.HumanoidRootPart.Position)
end
enemy.Humanoid.MoveToFinished:Connect(function()
if isTargeting and not isChangingDestination and not db then
print("changing destination")
isChangingDestination = true
isTargeting = false
db = true
count = 1
local selectedNode = Nodes[math.random(1,#Nodes)]
path:ComputeAsync(enemy.HumanoidRootPart.Position, selectedNode.Position)
waypoints = path:GetWaypoints()
enemy.Humanoid:MoveTo(waypoints[count].Position)
elseif not isTargeting and isChangingDestination and not db then
count+=1
db = true
if waypoints[count] ~= nil then
enemy.Humanoid:MoveTo(waypoints[count].Position)
print("following track")
else
print("changing destination once finished")
count = 1
local selectedNode = Nodes[math.random(1,#Nodes)]
path:ComputeAsync(enemy.HumanoidRootPart.Position, selectedNode.Position)
waypoints = path:GetWaypoints()
enemy.Humanoid:MoveTo(waypoints[count].Position)
end
end
end)
db = false
wait()
end
end
I have also tried making the parts rest in workspace and getting its descendants but it didn’t work.