Still can't fix this!

Hi Matt,

I’m still having a problem with using [mctl] shortcode on a page. Oddly, all the other variables of the shortcodes show their taxonomies perfectly, but the basic one shows an error:
Catchable fatal error: Object of class WP_Error could not be converted to string in /home/epicurus/public_html/food/recipes/wp-content/plugins/multi-column-taxonomy-list/multi-column-taxonomy-list.php on line 212
However, in another WP installation, the code works perfectly, with the same plugins. I presumed it might be a plugin conflict, but the issue remains even if I deactivate all the plugins.

The error breaks the remainder of the page as you’ll see here: https://www.epicurus.com/food/recipes/the-categories yet it works even in this installation with other categories as you can see: https://www.epicurus.com/food/recipes/categories/baking

It works exactly as it should in this separate WP install: https://www.epicurus.com/beverages/categories

How do I fix it? It’s a very important part of my site and I’d much appreciate your kind help in resolving it. Thanks Matt!

https://www.ads-software.com/plugins/multi-column-taxonomy-list/