Reply To: shopping cart updating quantity of product error

Hello,

I deactivated all the plugins except Elementor and other theme related, the error was gone.

Please try once more:

deactivate all the plugins except these ones:

Slider Revolution
WPBakery Page Builder or Elementor
Woodmart Core
Contact Form 7
MailChimp for WordPress
WooCommerce
Safe SVG

Check how it works.

Best Regards