# How to :: read the inspector error

### What’s that?[¶](https://github.com/ToucanToco/doc-v3/blob/main/additional-ressources/troubleshooting/broken-reference/README.md)

These are the common errors you can find while you’re inspecting your page in your internet browser.

### Ex1: Operation Failure: A pipeline stage specification object must contain exactly one field[¶](https://github.com/ToucanToco/doc-v3/blob/main/additional-ressources/troubleshooting/broken-reference/README.md)

**Error**

<figure><img src="https://1809014303-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZxYYf1KpgarKMgMsDCrw%2Fuploads%2Fgit-blob-58a931d3e44286c03d45f1147528825d3835e30a%2Ferror-operation-failures.png?alt=media" alt=""><figcaption><p>Error example</p></figcaption></figure>

**Checklist**

* Did you forgot a `,` in your query between your different steps?
* Did you forgot to add `multiple_queries: true` and you have 2 queries in your `data` step?