How to implement FindPartOnRayWithIgnoreList into this bot script?

Hello there, scripters! I'm having a problem with implementing FindPartOnRayWithIgnoreList into my pathfinding AI. When ever I try to do it in the script it throws an error: Unable to cast value to Objects. When I put it back to FindPartOnRay in the script, it is fully working again, but there is no ignore list for the AI. Here's the code

local maxDistance = 5000

local canWander = true
local WanderX, WanderZ = 20, 20

function getHumanoid(model)
	for _, v in pairs(model:GetChildren()) do
		if v:IsA'Humanoid' then
			return v
		end
	end
end

local ai = script.Parent
local human = getHumanoid(ai)
local hroot = ai.HumanoidRootPart
local zspeed = hroot.Velocity.magnitude


local pfs = game:GetService("PathfindingService")

function GetPlayerNames()
	local players = game:GetService('Players'):GetChildren()
	local name = nil
	for _, v in pairs(players) do
		if v:IsA'Player' then
			name = tostring(v.Name)
		end
	end
	return name
end

function GetPlayersBodyParts(t)
	local torso = t
	if torso then
		local figure = torso.Parent
		for _, v in pairs(figure:GetChildren()) do
			if v:IsA'Part' then
				return v.Name
			end
		end
	else
		return "HumanoidRootPart"
	end
end

function GetTorso(part)
	local chars = game.Workspace:GetChildren()
	local torso = nil
	for _, v in pairs(chars) do
		if v:IsA'Model' and v ~= script.Parent and v.Name == GetPlayerNames() then
			local charRoot = v:FindFirstChild'HumanoidRootPart'
			if (charRoot.Position - part).magnitude < maxDistance then
				torso = charRoot
			end
		end
	end
	return torso
end

-- no touchy
local path
local waypoint
local oldpoints
local isWandering = 0

if canWander then
	spawn(function()
		while isWandering == 0 do
			isWandering = 1
			local desgx, desgz = hroot.Position.x + math.random(-WanderX, WanderX), hroot.Position.z + math.random(-WanderZ, WanderZ)
			human:MoveTo(Vector3.new(desgx, 0, desgz))
			wait(math.random(4, 6))
			isWandering = 0
		end
	end)
end

while wait() do
	local enemytorso = GetTorso(hroot.Position)	
	if enemytorso ~= nil then -- if player detected
		isWandering = 1
		local function checkw(t)
			local ci = 3
			if ci > #t then
				ci = 3
			end
			if t[ci] == nil and ci < #t then
				repeat
					ci = ci + 1
					wait()
				until t[ci] ~= nil
				return Vector3.new(1, 0, 0) + t[ci]
			else
				ci = 3
				return t[ci]
			end
		end
		
		path = pfs:CreatePath()
		path:ComputeAsync(hroot.Position, enemytorso.Position)
		waypoint = path:GetWaypoints()
		oldpoints = waypoint
		local connection;
		
		local direct = Vector3.FromNormalId(Enum.NormalId.Front)
		local ncf = hroot.CFrame * CFrame.new(direct)
		direct = ncf.p.unit
		local rootr = Ray.new(hroot.Position, enemytorso.Position)
		local phit, ppos = game.Workspace:FindPartOnRayWithIgnoreList(rootr, ai)
		
		if path and waypoint or checkw(waypoint) then
			if checkw(waypoint) ~= nil and checkw(waypoint).Action == Enum.PathWaypointAction.Walk then
				human:MoveTo( checkw(waypoint).Position )
				human.Jump = false
			end
			
			if checkw(waypoint) ~= nil and checkw(waypoint).Action == Enum.PathWaypointAction.Jump then
				wait(2)
				human.Jump = true
				wait(0.5)
				human:MoveTo( checkw(waypoint).Position )
			else
				human.Jump = false
			end
			
		else
			for i = 3, #oldpoints do
				human:MoveTo( oldpoints[i].Position )	
			end
		end
	elseif enemytorso == nil and canWander then -- if player not detected
		isWandering = 0
		path = nil
		waypoint = nil
		human.MoveToFinished:Wait()
	end
end

print("_char is chosen, subject is pathfinding...")

I'm pretty sure this one line breaks the whole script,

local phit, ppos = game.Workspace:FindPartOnRayWithIgnoreList(rootr, ai)

Any ideas? What is going wrong?

I've tried the workspace:Raycast but it dosen't work.

The FindPartOnRayWithIgnoreList function is deprecated. Use workspace:Raycast() instead. More than that, the ignoreDescendantsList paramater takes a table.