Why does an error occur when selecting an option in a select list?

Question

JavaScript

When you select an option in the select list, the price should be updated, but instead an error appears:

POST https://youandishop.ru/index.php?route=product/pro... 404 (Not Found

In the sources tab, you can see that the error is at 1629 line, please help me solve it!
Website: https://bit.ly/3ozh6o2

Answer 1

there is no necessary method
to check the operation of the modifier