Validation of irregular proceedings

(1) Minor insubstantial irregularities in any notice or proceeding shall not make any proceeding invalid. (2) In case it is found upon a hearing that, by reason of some irregularity or defect in the proceedings, the appraisal has not been properly made, the court may, nevertheless, on having proof that expense has been incurred which is a proper charge against the property of the complainant, render a finding as to the amount of benefits to said property and appraise the proper benefits accordingly, and thereupon said land shall be assessed as other land equally benefited. (3) In the event that at any time, either before or after the issuance of bonds, the appraisal of benefits, either as a whole or in part, is declared by any court of competent jurisdiction to be invalid by reason of any defect or irregularity in the proceedings therefor, whether jurisdictional or otherwise, the said district court where the original case is pending is authorized, on the application of the board of directors of the said district or on the application of any holder of any bonds which may have been issued pursuant to this article, promptly and without delay to remedy all defects or irregularities, as the case may require, by causing to be made a new appraisal of the amount of benefits against the whole or any part of the lands in the said district, as the case may require.