Undeploy the Wikistories Extension
===

Follow the step to prevent error on Story namespace page

1. Remove `wfLoadExtension( 'Wikistories' );`
2. Add the following code to LocalSettings.php

```
$wgExtraNamespaces = [
	1704 => "Story",
	1705 => "Story_Talk"
];
$wgContentHandlers[ 'story' ] = JsonContentHandler::class;
```