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[Home](./index.md) &gt; [@friendlycaptcha/sdk](./sdk.md) &gt; [FRCWidgetStateChangeEventData](./sdk.frcwidgetstatechangeeventdata.md) &gt; [error](./sdk.frcwidgetstatechangeeventdata.error.md)

## FRCWidgetStateChangeEventData.error property

The error that caused the state change, if any. Undefined if `state` is not equal to `"error"`<!-- -->.

**Signature:**

```typescript
error?: WidgetErrorData;
```