> ## Documentation Index
> Fetch the complete documentation index at: https://docs.superun.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Use Troubleshoot for bugs

> Troubleshoot / review / auto-test in preview cost no credits — fix bugs only.

When a button does nothing or data won’t save, don’t burn credits on a blind re-run.

**Troubleshoot** (and related free @ commands) can diagnose and fix in preview **without credits**. It reads errors, network, and DB logs; verifies after the fix; and only repairs — it won’t add features.

### How to

1. Open the broken page and reproduce the failure in preview so logs capture it.
2. Click **Troubleshoot** above the input (redeploys, then checks/fixes), or
3. Type `@` → **Troubleshoot** and describe the issue, e.g. `@Troubleshoot checkout submit does nothing`.

### Other free @ commands

* **Code review** — review recent changes and fix latent defects.
* **Auto test** — focus on a feature, find and fix issues.

### Note

Troubleshoot does not add features. For new work, use free consult first, then Execute.

## Related docs

[Auto-fix / Troubleshoot](/superun/features/auto-fix)

## Original WeChat post

[Original WeChat post](https://mp.weixin.qq.com/s/mb8tJBeKSUg03ZoIs9hZow)