jeanlortye

Deactivate and remove the Yoast plugin. Download wordpress-seo. 14.0. Go to new plugin, upload the zip file and activate plugin. Done!

Hello Taco, thank you for your quick response. It is indeed only a warning but such an error message disrupts our website. I have replaced ‘define (‘ WP_DEBUG ‘, false)’ for

ini_set (‘display_errors’, ‘Off’);
ini_set (‘error_reporting’, E_ALL);
define (‘WP_DEBUG’, false);
define (‘WP_DEBUG_DISPLAY’, false);

and that means that I no longer see PHP messages on the front. So problem solved!

I use Yoast Premium and have the same problem. The WP_DEBUG is disabled in the wp-config.php but the problems stays. I currently see it on more WordPress websites. I finally turned off the Yoast plugin. That may not be the intention, I hope.