Be it further enacted, that all municipal taxes on real estate in the city, and all penalties and costs securing thereon are hereby declared to be a lien on said realty from and after the 10th day of January of the year for which same are assessed, superior to all other liens except the liens of the United States, State of Tennessee, and Cumberland County, for taxes legally assessed thereon, with which it shall be a lien of equal dignity. No assessment shall be invalid because the size and dimensions of any tract, lot or parcel of land shall not have been precisely named or the amount of the valuation or tax not correctly given, nor because the property has been assessed in the name of a person who did not own the same, nor because the same was assessed to unknown owners, nor on account of any objection or informality merely technical, but all such assessments shall be good and valid. The City Council shall have power to correct any errors in the tax assessments upon a certificate filed by the Assessor of Assessing Body. (As amended by Priv. Acts 1995, ch. 55, sec. 2 and Priv. Acts 2014, ch. 55, sec. 1)