Uptendr
All guides

Lovable app broke after an edit: how to find the cause and recover

Last updated November 9, 2026

If your Lovable app broke after an edit, stop and send no more prompts. Return to the last good version first. Then find the cause. Lovable and Supabase are products of other companies, and Uptendr has no connection with them.

Stop and look

Each new prompt can add more changes. The cause then becomes more difficult to find.

  1. Stop and send no more prompts.
  2. Open the status page of Lovable and make sure that Lovable has no outage.
  3. Write down what failed, the page where it failed and the exact error.
  4. Test the preview and the live site separately.

Visitors see the last version that you published. If the live site is correct and the preview is not correct, your users do not have the problem.

Return to the last good version

  1. Open the History panel from the top bar of the editor.
  2. Find the last version that operated correctly.
  3. Click Revert on that version and confirm.
  4. Test the main tasks of your app in the preview.
  5. If the live site also has the problem, publish the good version.
Warning: A revert restores the code only. A revert does not restore the data in your database. If an edit changed your data, use a database backup.

Find the cause

  • The pages are empty after a security prompt. The AI tool possibly enabled RLS with no policies. Read how to examine the database rules.
  • Users cannot sign in on the live domain. Open the URL Configuration page in Supabase. Make sure that the Site URL and the Redirect URLs include your live domain.
  • The build shows Dependency installation failed. A new package possibly needs a different version of another package. Read the first error in the build log.
  • The preview operates correctly and the live site does not. Examine the secrets of the project. Make sure that you published the latest version.
  • Test payments operate correctly and real payments do not. Make sure that the app uses the live keys and the live webhook of the payment service.
  • An edge function fails. Read the logs of the function. Make sure that each secret that the function uses exists.

Repair the problem with one small prompt

  1. Give the exact error and the name of the page.
  2. Tell Lovable which parts must not change.
  3. Ask for the cause and a plan first. Use Plan mode.
  4. Read the plan and approve one change.
  5. Test the main tasks of your app.

Use a prompt like this example.

The Orders page shows an empty list after the last edit.
The console error is: [paste the exact error].
Do not change the sign-in or the payment code.
Tell me the cause and your plan. Do not change code yet.

If two prompts do not repair the problem, revert the changes. Then get help from a developer or use a different plan.

Prevent the next problem

  1. Bookmark a good version before each large change.
  2. Ask for one change in each prompt.
  3. Test the main tasks after each edit.
  4. Connect your project to GitHub, so that you have a second copy of the code.
  5. Follow a regular maintenance routine.

How Uptendr helps

Uptendr connects to the GitHub copy of your project. Each night, Uptendr opens your pages and finds errors. If a build or a page breaks, Uptendr can ask an AI model to write a fix. You get the fix as a pull request, and it waits for you to merge it.

See how Uptendr operates

More guides