Resignation before the end of employment contract for holding salaries

I am on an unlimited contract with a school. My contract will end in November 2020, however, I would like to resign as early as this month (July 2020), with 30 days notice.

The reason for resigning is to look for another job to compensate for my financial obligations because we signed an agreement that we have no salary from June 2020 to November 2020 due to pandemic/crisis.

Is there any chance that my employer won't allow me to resign or ban me?