65 ILCS 55/25
No person or persons accepting the vouchers or bonds as provided herein shall have any claim or lien upon the city, town or village in any event for the payment of such vouchers or bonds or the interest thereon, except from the collections of the assessment against which said vouchers or bonds are issued, but the municipality shall not, nevertheless, be in any way liable to the holders of said vouchers or bonds in case of failure to collect the same, but shall, with all reasonable diligence, so far as it can legally do so, cause a valid special assessment or assessments, special tax or taxes, as the case may be, to be levied and collected, to pay said bonds and vouchers, until all bonds and vouchers shall be fully paid. Any holder of vouchers or bonds, or their assigns, shall be entitled to summary relief by way of mandamus or injunction to enforce the provisions hereof.
65 ILCS 55/25