No step in any proceeding shall be invalidated or affected by any error or mistake or departure from the provisions governing the giving of notice under this chapter. The failure of the City Clerk to mail any notice or the failure of any person to receive the notice shall not affect in any way whatsoever the validity of any proceedings taken under this division, nor prevent the City Council from proceeding with any hearing so noticed. No notice, nor any publication of any notice, order, resolution, or other matter, other than as expressly provided in this chapter, shall be necessary to give validity to any of the proceedings provided in this chapter. (Ord. 6129-NS § 20, 1992)