Cart quantity picker leads to "Something went wrong - no valid id or line parameter"

Shopify Discussion

Topic summary

A Shopify store owner using the Prestige theme reports that the cart quantity picker is malfunctioning. When attempting to adjust quantities using +/- buttons or remove items, users encounter an error message: “Something went wrong - no valid id or line parameter.”

Troubleshooting attempts:

  • One responder tested the site but couldn’t reproduce the issue
  • Standard browser troubleshooting was suggested (clearing cookies/cache, trying different browsers, incognito mode)

Current status:

  • The issue remains unresolved
  • Another user later asked if a solution was found, indicating the problem may affect multiple stores
  • A Shopify support representative provided generic troubleshooting steps including: checking browser extensions, trying different devices/networks, disabling pop-up blockers, and contacting theme developers if issues persist
  • The final commenter criticized the support response as inadequate for not addressing the core issue

The discussion appears ongoing with no confirmed fix identified.

Summarized with AI on November 9. AI used: claude-sonnet-4-5-20250929.
1

Hi there,

I’m using Prestige theme. Website is slimbrew.co.

Whenever I go into the cart after adding something, I can’t touch the quantity selector. If I try to +/- or remove an item, it will lead to the following page. How do I fix this? Thanks so much!

jman808_0-1709060521624.png
jman808_0-1709060521624.png1670×1610 112 KB

2

I tested it. I didn’t see any issues. Try in a different browser or clear your browser cookies.

3

You ever find solution to this issue? Can you share what happened?

4

Hey, @Havuhgooday !

I understand you have a concern involving your theme. As mentioned by @YOD_Solutions , you may try performing local troubleshooting steps such as clearing your browser’s cookies and cache. There’s a possibility this issue is caused by surrounding circumstances and local troubleshooting may fix it. Here’s a full list of steps you can try:

  • Clear the cookies and cache of your browser. After this, completely reboot the browser.
  • Try a different web browser, as well as an incognito window or private browsing window to rule out any browser issues.
    If you are still experiencing the error using incognito, confirm you have disabled browser extensions as these can change how the pages look.
  • Ensure the web browser is up to date on the latest version.
  • Try another device, such as another computer or mobile phone.
  • Try another internet connection (switching to a cellular network on a phone rather than wifi, for example).
  • Ensure you do not have any firewalls or pop up blockers enabled on your device as these can interfere.

If none of these resolve the issue, you may contact the theme developer for assistance. If you’re using a Shopify theme, you’re welcome to create a support ticket by visiting our Help Center.

5

This is aTERRIBLE RESLONSE IT DOESNT EVEN ADDRESS THE ISSUE