diff --git a/pandora_console/general/header.php b/pandora_console/general/header.php
index 2b423360c6..3c82f32566 100644
--- a/pandora_console/general/header.php
+++ b/pandora_console/general/header.php
@@ -206,6 +206,8 @@ echo sprintf('<div id="header_table" class="header_table_%s">', $menuTypeClass);
             $select[0]['autorefresh_white_list']
         );
 
+        $header_autorefresh = '';
+        $header_autorefresh_counter = '';
         if ($config['legacy_vc']
             || ($_GET['sec2'] !== 'operation/visual_console/render_view')
             || (($_GET['sec2'] !== 'operation/visual_console/render_view')
@@ -900,6 +902,7 @@ echo sprintf('<div id="header_table" class="header_table_%s">', $menuTypeClass);
         if ($_GET['refr']
             || (isset($do_refresh) === true && $do_refresh === true)
         ) {
+            $autorefresh_draw = false;
             if ($_GET['sec2'] == 'operation/events/events') {
                 $autorefresh_draw = true;
             }
diff --git a/pandora_console/include/functions_agents.php b/pandora_console/include/functions_agents.php
index 811f0f9287..1c8cc47a72 100644
--- a/pandora_console/include/functions_agents.php
+++ b/pandora_console/include/functions_agents.php
@@ -1374,7 +1374,7 @@ function agents_get_group_agents(
             $key = $row['id_agente'];
         }
 
-        if ($row['id_server'] !== '') {
+        if (($row['id_server'] ?? '') !== '') {
             if (is_metaconsole()) {
                 $server_name = db_get_row_filter(
                     'tmetaconsole_setup',
diff --git a/pandora_console/include/rest-api/models/VisualConsole/Item.php b/pandora_console/include/rest-api/models/VisualConsole/Item.php
index 420a8ce7ad..2baa14d838 100644
--- a/pandora_console/include/rest-api/models/VisualConsole/Item.php
+++ b/pandora_console/include/rest-api/models/VisualConsole/Item.php
@@ -243,10 +243,10 @@ class Item extends CachedModel
         }
 
         $decodedData['agentDisabled'] = static::parseBool(
-            $data['agentDisabled']
+            ($data['agentDisabled'] ?? false)
         );
         $decodedData['moduleDisabled'] = static::parseBool(
-            $data['moduleDisabled']
+            ($data['moduleDisabled'] ?? false)
         );
 
         return $decodedData;
@@ -1097,8 +1097,8 @@ class Item extends CachedModel
         $baseUrl = \ui_get_full_url('index.php');
         $mobileUrl = \ui_get_full_url('mobile/index.php');
 
-        if ((bool) $data['agentDisabled'] === true
-            || (bool) $data['moduleDisabled'] === true
+        if ((bool) ($data['agentDisabled'] ?? null) === true
+            || (bool) ($data['moduleDisabled'] ?? null) === true
         ) {
             return null;
         }
diff --git a/pandora_console/operation/visual_console/public_view.php b/pandora_console/operation/visual_console/public_view.php
index 759888aabb..f873941552 100644
--- a/pandora_console/operation/visual_console/public_view.php
+++ b/pandora_console/operation/visual_console/public_view.php
@@ -63,7 +63,7 @@ require_once 'include/functions_visual_map.php';
 $hash = (string) get_parameter('hash');
 $visualConsoleId = (int) get_parameter('id_layout');
 $config['id_user'] = (string) get_parameter('id_user');
-$refr = (int) get_parameter('refr', $config['refr']);
+$refr = (int) get_parameter('refr', ($config['refr'] ?? null));
 
 if (!isset($config['pure'])) {
     $config['pure'] = 0;
@@ -180,7 +180,7 @@ $visualConsoleItems = VisualConsole::getItemsFromDB(
 <script type="text/javascript">
     var container = document.getElementById("visual-console-container");
     var props = <?php echo (string) $visualConsole; ?>;
-    var items = <?php echo '['.implode($visualConsoleItems, ',').']'; ?>;
+    var items = <?php echo '['.implode(',', $visualConsoleItems).']'; ?>;
     var baseUrl = "<?php echo ui_get_full_url('/', false, false, false); ?>";
 
     var controls = document.getElementById('vc-controls');