No improvement assessment shall be invalid by reason of a failure to give, in any report on the proposed assessment, in the assessment ordinance, in the lien docket, or elsewhere in the proceedings, the name of the owner of any lot or other parcel of land, or part thereof, or the name of any person having a lien upon or interest in such property, or by reason of any error, mistake, delay, omission, irregularity or other act in any of the proceedings specified in this chapter, unless it appears that the assessment as made, insofar as it affects the person complaining, is unfair and unjust. The assembly shall have power and authority to remedy and correct such matters by suitable action and proceedings.