[12-Jun-2025 19:33:01 UTC] PHP Fatal error:  Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "wp_admin_headers" not found or invalid function name in /home/mjbynoyq/onyxvisasolution.com/wp-includes/class-wp-hook.php:324
Stack trace:
#0 /home/mjbynoyq/onyxvisasolution.com/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#1 /home/mjbynoyq/onyxvisasolution.com/wp-includes/plugin.php(517): WP_Hook->do_action()
#2 /home/mjbynoyq/onyxvisasolution.com/wp-admin/admin-ajax.php(45): do_action()
#3 {main}
  thrown in /home/mjbynoyq/onyxvisasolution.com/wp-includes/class-wp-hook.php on line 324