How to fix an error when placing an order in Bitrix?

Question

JavaScript

The buyer places an order and at the final stage the confirmation window "Order completed" does not appear, instead it is an endless download. I looked at the errors in the console, there are errors (although in fact the order is placed, notifications to the buyer and manager come)



and more specifically, in this piece of code

if(data.substr(0,7) === 'success')
    {
                    /*usstudio*/
                    yaCounter20783902.reachGoal('CALLBACK_REQUEST');
                    gtag('event','request',{'event_category': 'callback'});
                    window.BXReady.Market.showFormSuccess(formId,data);
                    return false;
    }

the number of the Yandex metrics counter has not changed, and in general what could have broken is not clear where to look?

Answer 1

as usual, everything turned out to be just
checked the work in a clean edge without any extensions, the basket worked
the same if you turned off the blockers in other browsers.
Thank you all very much for your help!