Dynamic Price Updater

[mc12345678]

so changing the line not made any difference, the error is thrown back as a result of the request, whereas that line is processing a successfull request?

jquery gives 3.2.1

thanks for continued help on this.

Could you try:
in includes/classes/dynamic_price_updater.php
at/around line 746
just below:

      // output the header for JSON
      header('Content-Type: application/json');

adding:

      header('X-Content-Type-Options: nosniff');

so that area of the code would look like:

      // output the header for JSON
      header('Content-Type: application/json');
      header('X-Content-Type-Options: nosniff');

By the way is this happening on one browser only or any?