single-post-search-result

I’m not redirected directly to a single post result and plus get that warning. Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘skeleton_single_post_search_result’ not found or invalid function name in /home/clients/fc2d20bb6ab959323d7c657f13b5ffbf/libertereligieuse/wp-includes/plugin.php on line 524