Idem for me :
Fatal error: Uncaught Error: Class 'JoostBlog\WP\Comment\Inc\Hacks' not found in *******************/plugins/yoast-comment-hacks/yoast-comment-hacks.php:53 Stack trace: #0 *******************/wp-admin/includes/plugin.php(2314): include_once() #1 *******************/wp-admin/plugins.php(192): plugin_sandbox_scrape('yoast-comment-h...') #2 {main} thrown in *******************/wp-content/plugins/yoast-comment-hacks/yoast-comment-hacks.php on line 53
