Paypal Payment options disappeared from admin menue

[toyseller]

Then I have this main error to get my website through to taking payments.

Ive been recreating the error and using Chrome Inspect. I dont really know what Im doing or whether this is useful but this is what comes back

Exception: ReferenceError: zcJS is not defined at collectsCardDataOnsite (https://www.xxx.co.uk/checkout_payment:63:2) at check_form (https://www.xxx.co.uk/checkout_payment:716:11) at HTMLFormElement.<anonymous> (https://www.xxx.co.uk/checkout_payment:92:32) at HTMLFormElement.dispatch (https://ajax.googleapis.com/ajax/lib...min.js:2:43090) at HTMLFormElement.v.handle (https://ajax.googleapis.com/ajax/lib...min.js:2:41074)
this: Window
paymentValue: "paypalwpp"

DOMException: Failed to execute 'querySelectorAll' on 'Element': '\' is not a valid selector.

It doesnt seem to like ... If (formPassed == false)

function collectsCardDataOnsite(paymentValue)
{
 zcJS.ajax({
  url: "ajax.php?act=ajaxPayment&method=doesCollectsCardDataOnsite",
  data: {paymentValue: paymentValue}
}).done(function( response ) {
  if (response.data == true) {
   var str = $('form[name="checkout_payment"]').serializeArray();

   zcJS.ajax({
    url: "ajax.php?act=ajaxPayment&method=prepareConfirmation",
    data: str
  }).done(function( response ) {
   $('#checkoutPayment').hide();
   $('#navBreadCrumb').html(response.breadCrumbHtml);
   $('#checkoutPayment').before(response.confirmationHtml);
   $(document).attr('title', response.pageTitle);

   });
  } else {
   $('form[name="checkout_payment"]')[0].submit();
}
});
return false;
}



    $(document).ready(function(){
      $('form[name="checkout_payment"]').submit(function() {
          $('.paymentSubmit').attr('disabled', true);
                  formPassed = check_form();
          if (formPassed == false) {
              $('.paymentSubmit').attr('disabled', false);
          }
          return formPassed;
              });
    });