Hello,
After activating the SEO by Yoast plugin my website immediately shuts down and I get the following error message:
Fatal error: Call to undefined function esc_textarea() in /home/pdca/domains/veltion.be/public_html/wp-content/plugins/wordpress-seo/admin/class-metabox.php on line 515
Deactiving the plugin restores my website.
Anyone who can help me to find the problem and tell me what to do, so I can use this plugin after all?
Thanks,
Thomas