Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/.sites/58/site43/web/wp-content/plugins/contact-form-7/includes/special-mail-tags.php:7
Stack trace:
#0 {main}
  thrown in /home/.sites/58/site43/web/wp-content/plugins/contact-form-7/includes/special-mail-tags.php on line 7