# Sandbox.BaseFileSystem.ReadJsonOrDefault

```csharp
T ReadJsonOrDefault(string filename, T returnOnError = null)
```

The same as ReadJson except will return a default value on missing/error.

### Parameters

- `filename` (`string`)
- `returnOnError` (`T`), default `null`

### Returns

`T`

Declared in [Sandbox.BaseFileSystem](/api/Sandbox.BaseFileSystem).
Assembly: `Sandbox.Filesystem`.