---
title: MusicUnderstandingError.internalError
framework: musicunderstanding
role: symbol
role_heading: Case
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+, watchOS 27.0+]
path: musicunderstanding/musicunderstandingerror/internalerror
---

# MusicUnderstandingError.internalError

The error that occurs when an unexpected internal failure prevents the session from completing.

## Declaration

```swift
case internalError
```

## See Also

### Types of error cases

- [MusicUnderstandingError.emptyAnalysisSet](musicunderstanding/musicunderstandingerror/emptyanalysisset.md)
- [MusicUnderstandingError.invalidAsset](musicunderstanding/musicunderstandingerror/invalidasset.md)
- [MusicUnderstandingError.sessionInProgress](musicunderstanding/musicunderstandingerror/sessioninprogress.md)