unknown response null: text/html Not Found

[Golden Synergy]

You are using an old Picaflor-Azul template but haven't updated its files for v155.

You'll need to update the jscript_framework.php file as well.
Similar discussion here: https://www.zen-cart.com/showthread....html-Not-found

And to work in v155 if your template has an /includes/templates/YOUR_TEMPLATE/jscript/jscript_framework.php file , it needs to be replaced by copying the one from /includes/template_default/jscript/jscript_framework.php in v155

Thanks Doc. that did it. :)