diff --git a/pandora_console/extensions/realtime_graphs/ajax.php b/pandora_console/extensions/realtime_graphs/ajax.php
index 8b633171ab..1482540f91 100644
--- a/pandora_console/extensions/realtime_graphs/ajax.php
+++ b/pandora_console/extensions/realtime_graphs/ajax.php
@@ -128,6 +128,6 @@ if (empty($data)) {
 }
 
 echo '{
-	"label": "'.htmlspecialchars($graph_title, ENT_QUOTES).'",    
-	"data": [["'.time().'", '.htmlspecialchars($data, ENT_QUOTES).']]
+	"label": "'.htmlspecialchars(($graph_title ?? ''), ENT_QUOTES).'",    
+	"data": [["'.time().'", '.htmlspecialchars(($data ?? ''), ENT_QUOTES).']]
 }';
diff --git a/pandora_console/godmode/agentes/module_manager_editor_common.php b/pandora_console/godmode/agentes/module_manager_editor_common.php
index 47c843f2d9..a9d809d29f 100644
--- a/pandora_console/godmode/agentes/module_manager_editor_common.php
+++ b/pandora_console/godmode/agentes/module_manager_editor_common.php
@@ -505,7 +505,7 @@ $tableBasicThresholds->data['caption_switch_warning_inverse_string'][0] = html_p
 $tableBasicThresholds->data['caption_warning_threshold'][0] .= '<span class="font_11" id="caption_str_warning">('.__('Str.').')</span>';
 $tableBasicThresholds->data['warning_threshold'][0] .= html_print_input_text(
     'str_warning',
-    str_replace('"', '', $str_warning),
+    str_replace('"', '', (isset($str_warning) === true) ? $str_warning : ''),
     '',
     10,
     1024,
@@ -602,7 +602,7 @@ $tableBasicThresholds->data['switch_critical_threshold'][0] .= html_print_div(
 $tableBasicThresholds->data['caption_critical_threshold'][0] .= '<span class="font_11" id="caption_str_critical">('.__('Str.').')</span>';
 $tableBasicThresholds->data['critical_threshold'][0] .= html_print_input_text(
     'str_critical',
-    str_replace('"', '', $str_critical),
+    str_replace('"', '', (isset($str_critical) === true) ? $str_critical : ''),
     '',
     10,
     1024,
diff --git a/pandora_console/include/class/AuditLog.class.php b/pandora_console/include/class/AuditLog.class.php
index ceb98875a1..a4988e8042 100644
--- a/pandora_console/include/class/AuditLog.class.php
+++ b/pandora_console/include/class/AuditLog.class.php
@@ -53,6 +53,48 @@ class AuditLog extends HTML
      */
     private $ajaxController;
 
+    /**
+     * TableId
+     *
+     * @var integer
+     */
+    public $tableId;
+
+    /**
+     * FilterIp
+     *
+     * @var array
+     */
+    public $filterIp;
+
+    /**
+     * FilterPeriod
+     *
+     * @var integer
+     */
+    public $filterPeriod;
+
+    /**
+     * FilterText
+     *
+     * @var string
+     */
+    public $filterText;
+
+    /**
+     * FilterType
+     *
+     * @var string
+     */
+    public $filterType;
+
+    /**
+     * FilterUser
+     *
+     * @var string
+     */
+    public $filterUser;
+
 
     /**
      * Class constructor
diff --git a/pandora_console/include/class/CredentialStore.class.php b/pandora_console/include/class/CredentialStore.class.php
index 94036c7ad8..1da01cd96a 100644
--- a/pandora_console/include/class/CredentialStore.class.php
+++ b/pandora_console/include/class/CredentialStore.class.php
@@ -850,7 +850,7 @@ class CredentialStore extends Wizard
                                 'privilege' => 'AR',
                                 'type'      => 'select_groups',
                                 'nothing'   => false,
-                                'selected'  => (defined($id_group_filter) ? $id_group_filter : 0),
+                                'selected'  => ((isset($id_group_filter) === true) ? $id_group_filter : 0),
                                 'return'    => true,
                                 'size'      => '80%',
                             ],
diff --git a/pandora_console/include/class/SatelliteAgent.class.php b/pandora_console/include/class/SatelliteAgent.class.php
index a40b3ecc7a..5dc149ffb4 100644
--- a/pandora_console/include/class/SatelliteAgent.class.php
+++ b/pandora_console/include/class/SatelliteAgent.class.php
@@ -67,6 +67,34 @@ class SatelliteAgent extends HTML
      */
     private $ajaxController;
 
+    /**
+     * Satellite_name
+     *
+     * @var string
+     */
+    public $satellite_name;
+
+    /**
+     * Satellite_server
+     *
+     * @var string
+     */
+    public $satellite_server;
+
+    /**
+     * TableId
+     *
+     * @var integer
+     */
+    public $tableId;
+
+    /**
+     * Satellite_config
+     *
+     * @var string
+     */
+    public $satellite_config;
+
 
     /**
      * Class constructor
diff --git a/pandora_console/include/functions_extensions.php b/pandora_console/include/functions_extensions.php
index f381484461..0a40a38e5a 100755
--- a/pandora_console/include/functions_extensions.php
+++ b/pandora_console/include/functions_extensions.php
@@ -440,7 +440,7 @@ function extensions_add_operation_menu_option($name, $fatherId=null, $icon=null,
     $option_menu['acl'] = $acl;
     $extension = &$config['extensions'][$extension_file];
 
-    $option_menu['sec2'] = $extension['dir'].'/'.mb_substr($extension_file, 0, -4);
+    $option_menu['sec2'] = $extension['dir'].'/'.mb_substr(($extension_file ?? ''), 0, -4);
     $option_menu['fatherId'] = $fatherId;
     $option_menu['subfatherId'] = $subfatherId;
     $option_menu['icon'] = $icon;
diff --git a/pandora_console/include/functions_notifications.php b/pandora_console/include/functions_notifications.php
index 61330b66f7..b6acadc952 100644
--- a/pandora_console/include/functions_notifications.php
+++ b/pandora_console/include/functions_notifications.php
@@ -818,7 +818,7 @@ function notifications_print_global_source_configuration($source)
 
     $html_checkboxes = '';
 
-    $blacklist = json_decode($source['subtype_blacklist'], 1);
+    $blacklist = json_decode(($source['subtype_blacklist'] ?? ''), 1);
     if (json_last_error() !== JSON_ERROR_NONE) {
         $blacklist = [];
     }
diff --git a/pandora_console/include/lib/Dashboard/Widgets/security_hardening.php b/pandora_console/include/lib/Dashboard/Widgets/security_hardening.php
index 9f7d726677..88e37c58b5 100644
--- a/pandora_console/include/lib/Dashboard/Widgets/security_hardening.php
+++ b/pandora_console/include/lib/Dashboard/Widgets/security_hardening.php
@@ -446,7 +446,7 @@ class SecurityHardening extends Widget
     {
         global $config;
 
-        $id_groups = explode(',', $group);
+        $id_groups = explode(',', ($group ?? ''));
         if (in_array(0, $id_groups) === true) {
             $id_groups = array_keys(users_get_groups($config['id_user'], 'AR', false));
         }
diff --git a/pandora_console/views/dashboard/configurationWidgets.php b/pandora_console/views/dashboard/configurationWidgets.php
index 68a51edbaa..24f2019f86 100644
--- a/pandora_console/views/dashboard/configurationWidgets.php
+++ b/pandora_console/views/dashboard/configurationWidgets.php
@@ -43,7 +43,7 @@ $form = [
     'extra'    => 'novalidate',
 ];
 
-$js = 'tinymce.init({
+$js .= ' tinymce.init({
     selector: "#textarea_text",
     plugins: "preview, searchreplace, table, nonbreaking, link, image",
     promotion: false,