Not updated to work with new version

Doesn’t work anymore.

Uncaught TypeError: Cannot read property 'split' of undefined
    at Object.a.payment.cardExpiryVal (jquery.payment.min.js?ver=1.4.1:1)
    at a.fn.init.a.payment.fn.cardExpiryVal (jquery.payment.min.js?ver=1.4.1:1)
    at a.fn.init.a.fn.payment (jquery.payment.min.js?ver=1.4.1:1)
    at HTMLFormElement.a (s4wc.min.js:50)
    at HTMLFormElement.dispatch (jquery.js?ver=1.12.4:3)
    at HTMLFormElement.r.handle (jquery.js?ver=1.12.4:3)
    at Object.trigger (jquery.js?ver=1.12.4:3)
    at Object.a.event.trigger (jquery-migrate.min.js?ver=1.4.1:2)
    at a.fn.init.triggerHandler (jquery.js?ver=1.12.4:3)
    at HTMLFormElement.submit (checkout.min.js?ver=2.6.14:1)