Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "_wp_footnotes_kses_init" not found or invalid function name in /homepages/21/d385554134/htdocs/wordpress/wp-includes/class-wp-hook.php:308 Stack trace: #0 /homepages/21/d385554134/htdocs/wordpress/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #1 /homepages/21/d385554134/htdocs/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() #2 /homepages/21/d385554134/htdocs/wordpress/wp-includes/pluggable.php(48): do_action() #3 /homepages/21/d385554134/htdocs/wordpress/wp-includes/user.php(3606): wp_set_current_user() #4 /homepages/21/d385554134/htdocs/wordpress/wp-includes/pluggable.php(70): _wp_get_current_user() #5 /homepages/21/d385554134/htdocs/wordpress/wp-includes/capabilities.php(873): wp_get_current_user() #6 /homepages/21/d385554134/htdocs/wordpress/wp-content/plugins/wordfence/lib/wfUtils.php(1301): current_user_can() #7 /homepages/21/d385554134/htdocs/wordpress/wp-content/plugins/wordfence/lib/wordfenceClass.php(2111): wfUtils::isAdmin() #8 /homepages/21/d385554134/htdocs/wordpress/wp-includes/class-wp-hook.php(308): wordfence::veryFirstAction() #9 /homepages/21/d385554134/htdocs/wordpress/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #10 /homepages/21/d385554134/htdocs/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action() #11 /homepages/21/d385554134/htdocs/wordpress/wp-settings.php(480): do_action() #12 /homepages/21/d385554134/htdocs/wordpress/wp-config.php(92): require_once('/homepages/21/d...') #13 /homepages/21/d385554134/htdocs/wordpress/wp-load.php(50): require_once('/homepages/21/d...') #14 /homepages/21/d385554134/htdocs/wordpress/wp-blog-header.php(13): require_once('/homepages/21/d...') #15 /homepages/21/d385554134/htdocs/wordpress/index.php(17): require('/homepages/21/d...') #16 {main} thrown in /homepages/21/d385554134/htdocs/wordpress/wp-includes/class-wp-hook.php on line 308