A vacancy in the office of Mayor, occurring for any reason, shall be filled in the same manner as that provided for filling vacancies in Council as set out in Section 3.11 of this Charter. In the event Council should fail to fill the vacancy within thirty days after its occurrence, the members of Council shall receive no further compensation until such vacancy shall have been filled and no funds shall thereafter issue, or be appropriated or paid for such compensation which would ordinarily have accrued during the period of such noncompliance.