---
title: "PreviewSession.Event.didFail(_:)"
framework: Quick Look
role: symbol
role_heading: Case
platforms: [visionOS 2.0+]
path: "quicklook/previewsession/event/didfail(_:)"
---

# PreviewSession.Event.didFail(_:)

The session failed to open with an error.

## Declaration

```swift
case didFail(any Error)
```