Pathfinding wont compute the path correctly

[Val_RBLX (Boo_Yah)]

Im making a pathfinding AI and it works alright for the main part, but for some reason when i go upstairs the npc stops computing the path correctly.

while wait() do
		local Path = PS:CreatePath({AgentRadius = 3.25,AgentCanJump = true})

		Path:ComputeAsync(hrp.Position, thiefRoot.Position)
		local waypoints = Path:GetWaypoints()
		
		print(1)
		
		if npc.LocatedThief.Value == true then
			for i,waypoint in pairs(waypoints) do
				
				print(2)
				if i == 2 then
					
					print(3)

					hum:MoveTo(waypoint.Position)
					wait(.15)
				end
			end
		end
end

The npc.LocatedThief value is not the issue, as the green cube on screen indicates that the value is true
I am really unexperienced with pathfinding so i have no idea what the problem might be.

[gwenniekins]

try making the stairs not collide, and having an invisible ramp that follows the same general angle, also if the stairway isn’t more than 6.5 studs wide, it’ll fail anyway