Lovable App Broke After Changes
If your Lovable app broke after changes, use the version history to revert to the last working version. Click the clock icon in the Lovable editor to see previous snapshots, then restore the one before your breaking change. If the issue is in your published app, remember that published versions are snapshots — your live app is still running the last version you published, so only the editor preview is affected.
Why this matters
Lovable generates complex React + Supabase code from natural language prompts. A single prompt can touch dozens of files simultaneously, and the AI sometimes introduces breaking changes — especially when modifying existing features or adding functionality that conflicts with current code. Without a recovery strategy, a broken build can feel like losing everything.
What's at stake
A broken Lovable app blocks your progress entirely. You cannot ship features, fix bugs, or show your app to users until you recover. Every hour spent manually debugging AI-generated code is time not spent building. Knowing how to recover quickly means the difference between a 5-minute setback and a full day lost.
Step by step.
Check if the published version is still working
Open your published Lovable URL in an incognito window. Lovable uses snapshot-based deployment, so your live app runs the last published version — not the current editor state. If your live app works fine, the break is only in your development environment, and your users are unaffected.
Use version history to identify the breaking change
Click the clock icon in the Lovable editor to open version history. Each prompt creates a new version. Find the version just before things broke and compare what changed. This tells you exactly which prompt caused the issue.
Revert to the last working version
In version history, select the last working version and click "Restore." This rolls back all files to that state. You lose the changes from the breaking prompt, but you get a working app back immediately. You can then re-approach the feature with a more specific prompt.
Ask Lovable to fix the specific error
If you do not want to revert, copy the exact error message from the preview or browser console and paste it into the Lovable chat. Say: "My app shows this error after the last change. Please fix it without changing any other functionality." Being specific helps the AI focus on the fix rather than introducing more changes.
Use the Security View for deeper issues
If the break involves database or authentication problems, run the Security View (accessible from the editor toolbar). It scans your code, RLS policies, and Supabase configuration for issues that might not show as obvious errors but cause features to silently fail.
Export to GitHub as a safety net for the future
Connect your Lovable project to GitHub to get automatic version control. This gives you a full history of every change, the ability to create branches before risky changes, and a backup if anything goes wrong with the Lovable editor itself.
Recover from broken builds and ship with confidence
- Version tracking that shows exactly which change broke your app
- One-click recovery to get back to a working state
- Build health monitoring to catch issues before your users do
Frequently asked questions.
No. Your published app runs a separate snapshot. Reverting in the editor only affects your development version. Your users will not see any changes until you explicitly publish again.
Lovable generates code across multiple files simultaneously. A "small" change in natural language can trigger cascading modifications in components, styles, and data flows. The AI sometimes misinterprets which parts to change and which to preserve. Using specific, focused prompts that reference exact components or files reduces the chance of unintended changes.
Version history in Lovable is all-or-nothing — you restore an entire version, not individual files. If you need partial reverts, export to GitHub first where you can use Git to selectively undo changes file by file.
A white screen usually means a JavaScript error that crashes React rendering. Open your browser developer tools (F12), check the Console tab for error messages, and paste the exact error into the Lovable chat. Common causes include undefined variables from deleted components, broken imports after file renames, or missing Supabase environment variables.