diff --git a/class/class.navigation.php b/class/class.navigation.php
index 778234c..fcf527e 100644
--- a/class/class.navigation.php
+++ b/class/class.navigation.php
@@ -138,6 +138,7 @@
 					$navigation_level1_active	= (empty($_REQUEST['level1_active'])) ? "<a target=\"[tag:target]\" href=\"[tag:link]\" class=\"first_active\">[tag:linkname]</a>" : $_REQUEST['level1_active'];
 
 					// Выполняем запрос к БД на добавление нового меню
+
 					$AVE_DB->Query("
 						INSERT INTO
 							" . PREFIX . "_navigation
@@ -147,20 +148,20 @@
 							title				= '" . $navigation_title . "',
 							level1				= '" . $navigation_level1 . "',
 							level1_active		= '" . $navigation_level1_active . "',
-							level2				= '" . $_REQUEST['level2'] . "',
-							level2_active 		= '" . $_REQUEST['level2_active'] . "',
-							level3				= '" . $_REQUEST['level3'] . "',
-							level3_active 		= '" . $_REQUEST['level3_active'] . "',
-							level1_begin		= '" . $_REQUEST['level1_begin'] . "',
-							level2_begin		= '" . $_REQUEST['level2_begin'] . "',
-							level3_begin		= '" . $_REQUEST['level3_begin'] . "',
-							level1_end			= '" . $_REQUEST['level1_end'] . "',
-							level2_end			= '" . $_REQUEST['level2_end'] . "',
-							level3_end			= '" . $_REQUEST['level3_end'] . "',
-							begin				= '" . $_REQUEST['begin'] . "',
-							end					= '" . $_REQUEST['end'] . "',
+							level2				= '" . ($_REQUEST['level2'] ?? '') . "',
+							level2_active 		= '" . ($_REQUEST['level2_active'] ?? '') . "',
+							level3				= '" . ($_REQUEST['level3'] ?? '') . "',
+							level3_active 		= '" . ($_REQUEST['level3_active'] ?? '') . "',
+							level1_begin		= '" . ($_REQUEST['level1_begin'] ?? '') . "',
+							level2_begin		= '" . ($_REQUEST['level2_begin'] ?? '') . "',
+							level3_begin		= '" . ($_REQUEST['level3_begin'] ?? '') . "',
+							level1_end			= '" . ($_REQUEST['level1_end'] ?? '') . "',
+							level2_end			= '" . ($_REQUEST['level2_end'] ?? '') . "',
+							level3_end			= '" . ($_REQUEST['level3_end'] ?? '') . "',
+							begin				= '" . ($_REQUEST['begin'] ?? '') . "',
+							end					= '" . ($_REQUEST['end'] ?? '') . "', 
 							user_group			= '" . (empty($_REQUEST['user_group']) ? '' : implode(',', $_REQUEST['user_group'])) . "',
-							expand_ext			= '" . $_REQUEST['expand_ext'] . "'
+							expand_ext			= '" . ($_REQUEST['expand_ext'] ?? '') . "'
 					");
 
 					$navigation_id = $AVE_DB->getLastInsertId();
diff --git a/functions/func.navigation.php b/functions/func.navigation.php
index 217ba9c..f5c021e 100644
--- a/functions/func.navigation.php
+++ b/functions/func.navigation.php
@@ -12,7 +12,7 @@
 	 */
 
 
-	/**
+/**
 	 * Возвращает меню навигации
 	 *
 	 * @param int $id идентификатор меню навигации
@@ -36,13 +36,19 @@
 
 			$navigation = $AVE_DB->Query($sql, -1, 'nav_' . $navi_id, true, '.navigation')->FetchRow();
 
-			$navigation->user_group = explode(',',$navigation->user_group);
+			// Проверяем, что $navigation является объектом, прежде чем обращаться к свойствам
+			if (is_object($navigation)) {
+				$navigation->user_group = explode(',',$navigation->user_group);
+			} else {
+                // Если меню не найдено (результат false), возвращаем false или null. 
+                return false; 
+            }
 
 			return $navigation;
 	}
 
 
-	/**
+/**
 	 * Функция обработки навигации
 	 *
 	 * @param int $navi_tag - идентификатор меню навигации
@@ -59,6 +65,13 @@
 
 		$navi_menu = get_navigations($navi_id);
 
+		// ИСПРАВЛЕНИЕ: Проверяем, существует ли объект меню, сразу после его получения.
+		if (! $navi_menu)
+		{
+			echo 'Menu ', $navi_id, ' not found!';
+			return '';
+		}
+
 		$expnad_ext = $navi_menu->expand_ext;
 
 		// извлекаем level из аргумента
@@ -68,12 +81,6 @@
 
 		$navi = '';
 
-		if (! $navi_menu)
-		{
-			echo 'Menu ', $navi_id, ' not found!';
-			return '';
-		}
-
 		// выставляем гостевую группу по дефолту
 		if (! defined('UGROUP'))
 			define('UGROUP', 2);
@@ -104,7 +111,7 @@
 
 		// запрос для выборки по текущему алиасу
 		$sql_doc_active_alias = '';
- 
+
 		$url_suff = '';
 
 		if (defined('URL_SUFF') AND URL_SUFF)
@@ -282,15 +289,15 @@
 
 		// Парсим теги в шаблонах пунктов
 		$navi_item_tpl = array(
-			1 =>  array(
+			1 => array(
 				'inactive'	=> $navi_menu->level1,
 				'active'	=> $navi_menu->level1_active
 			),
-			2 =>  array(
+			2 => array(
 				'inactive'	=> $navi_menu->level2,
 				'active'	=> $navi_menu->level2_active
 			),
-			3 =>  array(
+			3 => array(
 				'inactive'	=> $navi_menu->level3,
 				'active'	=> $navi_menu->level3_active
 			)