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/27/d442796286/htdocs/wp-includes/class-wp-hook.php:308 Stack trace: #0 /homepages/27/d442796286/htdocs/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #1 /homepages/27/d442796286/htdocs/wp-includes/plugin.php(517): WP_Hook->do_action() #2 /homepages/27/d442796286/htdocs/wp-includes/pluggable.php(48): do_action() #3 /homepages/27/d442796286/htdocs/wp-includes/user.php(3622): wp_set_current_user() #4 /homepages/27/d442796286/htdocs/wp-includes/pluggable.php(70): _wp_get_current_user() #5 /homepages/27/d442796286/htdocs/wp-includes/capabilities.php(873): wp_get_current_user() #6 /homepages/27/d442796286/htdocs/wp-content/themes/Avada/includes/lib/inc/fusion-app/class-fusion-app.php(137): current_user_can() #7 /homepages/27/d442796286/htdocs/wp-content/themes/Avada/includes/lib/inc/fusion-app/class-fusion-app.php(123): Fusion_App->__construct() #8 /homepages/27/d442796286/htdocs/wp-content/themes/Avada/includes/lib/inc/fusion-app/helpers.php(173): Fusion_App::get_instance() #9 /homepages/27/d442796286/htdocs/wp-content/themes/Avada/includes/class-avada-page-options.php(72): fusion_is_preview_frame() #10 /homepages/27/d442796286/htdocs/wp-content/themes/Avada/includes/bootstrap.php(162): Avada_Page_Options->__construct() #11 /homepages/27/d442796286/htdocs/wp-content/themes/Avada/functions.php(51): require_once('/homepages/27/d...') #12 /homepages/27/d442796286/htdocs/wp-settings.php(591): include('/homepages/27/d...') #13 /homepages/27/d442796286/htdocs/wp-config.php(116): require_once('/homepages/27/d...') #14 /homepages/27/d442796286/htdocs/wp-load.php(50): require_once('/homepages/27/d...') #15 /homepages/27/d442796286/htdocs/wp-blog-header.php(13): require_once('/homepages/27/d...') #16 /homepages/27/d442796286/htdocs/index.php(17): require('/homepages/27/d...') #17 {main} thrown in /homepages/27/d442796286/htdocs/wp-includes/class-wp-hook.php on line 308