## error_json(self, msg) {#System.String}

Gets the error message string in JSON format.


### Returns 


The JSON string.


```python

def error_json(self, msg):
    ...
```


| Parameter | Type | Description |
| :- | :- | :- |
| msg | System.String | The error message. |



### See Also
* module [`aspose.cellsgridjs`](../../)
* class [`GridJsWorkbook`](/cells/python-net/aspose.cellsgridjs/gridjsworkbook)