voluptasmollitia/docs-exp/storage.uploadtask.catch.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/storage](./storage.md) &gt; [UploadTask](./storage.uploadtask.md) &gt; [catch](./storage.uploadtask.catch.md)

## UploadTask.catch() method

Equivalent to calling `then(null, onRejected)`<!-- -->.

<b>Signature:</b>

```typescript
catch(onRejected: (error: FirebaseStorageError) => unknown): Promise<unknown>;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  onRejected | (error: [FirebaseStorageError](./storage.firebasestorageerror.md)<!-- -->) =&gt; unknown |  |

<b>Returns:</b>

Promise&lt;unknown&gt;