---
title: WebPage.NavigationError
framework: webkit
role: symbol
role_heading: Enumeration
path: webkit/webpage/navigationerror
---

# WebPage.NavigationError

A specific error that caused a navigation to fail.

## Declaration

```swift
enum NavigationError
```

## Topics

### Enumeration Cases

- [WebPage.NavigationError.failedProvisionalNavigation(_:)](webkit/webpage/navigationerror/failedprovisionalnavigation(_:).md)
- [WebPage.NavigationError.invalidURL](webkit/webpage/navigationerror/invalidurl.md)
- [WebPage.NavigationError.pageClosed](webkit/webpage/navigationerror/pageclosed.md)
- [WebPage.NavigationError.webContentProcessTerminated](webkit/webpage/navigationerror/webcontentprocessterminated.md)

## Relationships

### Conforms To

- [Error](swift/error.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Observing navigation between webpages

- [WebPage.BackForwardList](webkit/webpage/backforwardlist-swift.struct.md)
- [WebPage.NavigationEvent](webkit/webpage/navigationevent.md)
- [navigations](webkit/webpage/navigations.md)