I’ve just installed the latest version of Slim SEO by @rilwis and it’s not working on CP 1.3.1.
This is the first part of the message I’m getting on the frontend just after activating the plugin:
Fatal error: Uncaught Error: Call to undefined function SlimSEO\MetaTags\do_blocks() in /home/public/www.arjayarana.xyz/wp-content/plugins/slim-seo/src/MetaTags/Helper.php:57
Slim SEO is an SEO plugin that actively supports ClassicPress, and I’m hoping that this hasn’t changed.