> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crossmint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# OldKeyException

> Kotlin Class

**Class**

```kotlin theme={null}
class OldKeyException : Exception
```

## Constructors

```kotlin theme={null}
constructor()
```

## Properties

| Property  | Type         | Description |
| --------- | ------------ | ----------- |
| `cause`   | `Throwable?` | -           |
| `message` | `String?`    | -           |