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/42/d810262041/htdocs/oldsite/wp-includes/class-wp-hook.php:308 Stack trace: #0 /homepages/42/d810262041/htdocs/oldsite/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #1 /homepages/42/d810262041/htdocs/oldsite/wp-includes/plugin.php(517): WP_Hook->do_action() #2 /homepages/42/d810262041/htdocs/oldsite/wp-includes/pluggable.php(48): do_action() #3 /homepages/42/d810262041/htdocs/oldsite/wp-includes/user.php(3606): wp_set_current_user() #4 /homepages/42/d810262041/htdocs/oldsite/wp-includes/pluggable.php(70): _wp_get_current_user() #5 /homepages/42/d810262041/htdocs/oldsite/wp-includes/pluggable.php(1148): wp_get_current_user() #6 /homepages/42/d810262041/htdocs/oldsite/wp-content/themes/elessi-theme/options/nasa-options.php(30): is_user_logged_in() #7 /homepages/42/d810262041/htdocs/oldsite/wp-content/themes/elessi-theme/functions.php(21): require_once('/homepages/42/d...') #8 /homepages/42/d810262041/htdocs/oldsite/wp-settings.php(585): include('/homepages/42/d...') #9 /homepages/42/d810262041/htdocs/oldsite/wp-config.php(106): require_once('/homepages/42/d...') #10 /homepages/42/d810262041/htdocs/oldsite/wp-load.php(50): require_once('/homepages/42/d...') #11 /homepages/42/d810262041/htdocs/oldsite/wp-blog-header.php(13): require_once('/homepages/42/d...') #12 /homepages/42/d810262041/htdocs/oldsite/index.php(17): require('/homepages/42/d...') #13 {main} thrown in /homepages/42/d810262041/htdocs/oldsite/wp-includes/class-wp-hook.php on line 308