Certain orders and decrees validated.

All orders, decrees, and judgments heretofore or hereafter made in actions for the validation of bonds or certificates of indebtedness by any judge disqualified by matters not apparent on the record are valid and binding on all parties unless attacked within 20 days of the entry thereof; and all orders, decrees, and judgments heretofore made in such validation actions by judges other than the regular judge or those mentioned or designated in the notices, or at places other than, or dates subsequent to, those mentioned in said notices, when it appears that the regular judge was disqualified, absent, or disabled from discharging the duties of his or her office, are hereby ratified.