Cart Total Not Updating When Changing Quantity

Store Design
, , , , , ,

Topic summary

A user is experiencing a cart functionality issue on their Shopify store. When changing product quantities on the cart page, the estimated total fails to update and displays an error message: “There was an error while updating your cart. Please try again.”

Current Status:

  • Initial cart additions work correctly and show accurate totals
  • Error occurs specifically when modifying quantities after items are added
  • Issue appears to be related to cart page customizations

Technical Context:

  • The problem involves the cart page template and potentially custom CSS/HTML modifications
  • User has provided both the live cart page URL and Shopify admin theme editor link for troubleshooting
  • Seeking assistance to identify and fix the underlying cause

The discussion remains open with no solution provided yet.

Summarized with AI on November 10. AI used: claude-sonnet-4-5-20250929.
1

When I am on my website’s cart page (https://sitharr.myshopify.com/cart)) I add something to the cart the estimated total shoes the right number but then I change the quantity and it shows an error message below the checkout button saying " There was an error while updating your cart. Please try again." How could I fix it.

Admin: https://admin.shopify.com/store/fcbab9-f1/themes/127698272321/editor?previewPath=%2Fcart&customCss=true&section=template–15545556697153__main-cart-items

Code : 8288