if the class action waiver at section 24.2 is found to be unenforceable in arbitration or if any part of this section 24.3 is found to be invalid or unenforceable , then the entirety of this section 24.3 shall be null and void and , in such case , the parties agree that the exclusive jurisdiction and venue described in section 24.1 shall govern any action arising out of or related to the agreements .