Trying to get the Popups extension to work, but it simply doesn't work. Doing the api.php test link thingie, and I get this error.
Fatal error: Class 'HtmlFormatter\HtmlFormatter' not found in /public_html/wiki/extensions/TextExtracts/includes/ExtractFormatter.php on line 27
Here's an example.
https://wikizilla.org/wiki/api.php?action=query&prop=extracts&exchars=175&titles=Ebirah
What can I do to fix this?