SECTION 58. WHEN CONTRACTS AND AGREEMENTS ARE INVALID.
   All contracts, agreements, or other obligations entered into, all ordinances and resolutions passed and orders adopted, contrary to the provisions of Section 57 of this Charter shall be void, and no person shall have any claim or demand whatever against the City thereunder nor shall the Council or any officer of the City waive or qualify the limitations fixed by such section or fasten upon the City any liability whatever in excess of such limits.