diff --git a/pandora_console/include/rest-api/models/VisualConsole/Items/ModuleGraph.php b/pandora_console/include/rest-api/models/VisualConsole/Items/ModuleGraph.php
index 631950c130..8c99584d3a 100644
--- a/pandora_console/include/rest-api/models/VisualConsole/Items/ModuleGraph.php
+++ b/pandora_console/include/rest-api/models/VisualConsole/Items/ModuleGraph.php
@@ -57,7 +57,7 @@ final class ModuleGraph extends Item
      *
      * @overrides Item->encode.
      */
-    protected function encode(array $data): array
+    protected static function encode(array $data): array
     {
         $return = parent::encode($data);
 
@@ -91,7 +91,7 @@ final class ModuleGraph extends Item
      *
      * @param array $data Unknown input data structure.
      *
-     * @return integer Valid identifier of an agent.
+     * @return mixed Valid identifier of an agent.
      */
     private static function extractIdCustomGraph(array $data)
     {
@@ -451,7 +451,7 @@ final class ModuleGraph extends Item
      *
      * @return array
      */
-    public function getListCustomGraph():array
+    public static function getListCustomGraph():array
     {
         include_once 'include/functions_custom_graphs.php';
         enterprise_include_once('include/functions_metaconsole.php');
@@ -487,7 +487,7 @@ final class ModuleGraph extends Item
      *
      * @return array Of inputs.
      *
-     * @throws Exception On error.
+     * @throws \Exception On error.
      */
     public static function getFormInputs(array $values): array
     {
@@ -498,7 +498,7 @@ final class ModuleGraph extends Item
         $inputs = Item::getFormInputs($values);
 
         if (is_array($inputs) !== true) {
-            throw new Exception(
+            throw new \Exception(
                 '[ModuleGraph]::getFormInputs parent class return is not an array'
             );
         }