How do I get rid of the <eof> error in my follow script?

I'm making an open-world, fantasy type of game and I have hit a roadblock. The script made was a follow script for an NPC to follow me, but didn't work when tested. I went to output and got this...21:12:32.149 - Workspace.NPC.Script:33: Expected , got 'while'. I went to the problem and I couldn't figure it out. The follow script is for R15 characters

function findNearestTorso(pos)
	local list = game.Workspace:children()
 	local torso = nil
 	local dist = 1000
	local temp = nil
	local human = nil
	local temp2 = nil
	 for x = 1, #list do
		temp2 = list[x]
		if (temp2.className == "Model") and (temp2 ~= script.Parent) then
			temp = temp2:findFirstChild("HumanoidRootPart")
			human = temp2:findFirstChild("Humanoid")
			if (temp ~= nil) and (human ~= nil) and (human.Health > 0) then
				if (temp.Position - pos).magnitude < dist then
					torso = temp
					dist = (temp.Position - pos).magnitude
				end
			end
		end
 	end
	return torso
end
--wait(math.random(0,5)/10)
	while true do
		 wait(0.5)
		 local target = findNearestTorso(script.Parent.HumanoidRootPart.Position)
		 if target ~= nil then
	  script.Parent.Humanoid:MoveTo(target.Position,target)
	 end
 end
 	return torso
--wait (math random(0,5)/10)
while true do
	wait(0.5)
	local target = findNearestTorso(script.Parent.Torso.Position)
	if target ~= nil then
		script.Parent.Humanoid:MoveTo(target.Position, target)
	end
end

The error is in the 33rd line, the error is "while" true do.