537. Subject to the provisions hereinbefore contained, no finding, sentence or order passed by a Court of competent jurisdiction shall be reversed or altered under Chapter XXVII or on appeal or revision on account–(a) of any error, omission or irregularity in the complaint, summons, warrant, charge, proclamation, order, judgment or other proceedings before or during trial or in any inquiry or other proceedings under this Code, or ¹[* * *] ²[* * *] Explanation–In determining whether any error, omission or irregularity in any proceeding under this Code has occasioned a failure of justice, the Court shall have regard to the fact whether the objection could and should have been raised at an earlier stage in the proceedings.