> ## 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.

# CrossmintWalletException

> Flutter Final Class

**Final Class**

Thrown by wallet operations — lookup failures, unsupported chain, missing wallet, malformed transaction payloads.

```dart theme={null}
final class CrossmintWalletException extends CrossmintException
```

## Constructors

### CrossmintWalletException

```dart theme={null}
const CrossmintWalletException(
  super.message, {
  super.code = CrossmintErrorCode.unknown,
  super.cause,
})
```

Creates a wallet exception.