Undefined variable

PHP Notice
Undefined variable: path
wp-content/plugins/wp-recall/rcl-functions.php:167

Код:

function rcl_path_by_url($url,$dir=false){
    if(!$dir) $dir = basename(content_url());
    if(function_exists('wp_normalize_path')) $path = wp_normalize_path($path); ---- на это ругается
    $array = explode('/',$url);
    $cnt = count($array);
    $path = '';
    $content_dir = $dir;
    foreach($array as $key=>$ar){
        if($array[$key]==$content_dir){
            $path = $_SERVER['DOCUMENT_ROOT'].'/'.$array[$key].'/';
            continue;
        }
        if($path){
            $path .= $ar;
            if($cnt>$key+1) $path .= '/';
        }
    }
    return $path;
}

Undefined variable: nicename
wp-content/plugins/wp-recall/functions/rcl-frontend.php:73

if(!$nicename) return false;
                $user_LK = $wpdb->get_var($wpdb->prepare("SELECT ID FROM ".$wpdb->prefix."users WHERE user_nicename='%s'",$nicename));

Undefined index: HTTPS
wp-content/plugins/wp-recall/add-on/profile/index.php:185

if( $_SERVER["HTTPS"] == 'on') rcl_webcam_scripts();

В этом, конечно, ничего страшного нет, но мало ли )