---
title: "When I try to use Site Studio page builder, why does it crash on existing pages but not on new pages?"
date: "2025-06-30T10:51:24+00:00"
summary: "Troubleshoot Site Studio page builder crashes on existing pages. Learn how to resolve the error and upgrade for smooth editing."
image:
type: "article"
url: "/drupal-starter-kits/help/69741-when-i-try-use-site-studio-page-builder-why-does-it-crash-existing-pages-not-new-pages"
id: "dd540013-b48f-49b8-9916-ae403817bed6"
---

You might experience page builder crashing if you enable Site Studio on your Drupal Starter Kits site with existing content, and use the page builder to edit the content.

The system displays the following error message:

`cannot convert null or found to object`

To resolve the error, upgrade to the current version of Site Studio.