Call to undefined method MarkdownExtraOverride::transform()

[djkcel]

The first error I got was: [:error] [pid 1807] [client] PHP Fatal error: Class 'MarkdownExtra_Parser' not found in /var/www/html/wiki/extensions/MarkdownExtraParser/MarkdownExtraParser.php on line 120 And I realized there was an underscore: class MarkdownExtraOverride extends MarkdownExtra_Parser { so I took that out. But now I get a different error:

[:error] [pid 2524] [client ] PHP Fatal error: Call to undefined method MarkdownExtraOverride::transform() in /var/www/html/wiki/extensions/MarkdownExtraParser/markdown.php on line 55

So I'm not sure if it's using some deprecated functions or something. Are we to use the classic version of the plugin or the latest? I'm using the latest.