diff --git a/Admin/Install/Navigation.php b/Admin/Install/Navigation.php
index 1fb0051..9f8104a 100644
--- a/Admin/Install/Navigation.php
+++ b/Admin/Install/Navigation.php
@@ -29,7 +29,7 @@ use phpOMS\DataStorage\Database\Pool;
  */
 class Navigation
 {
-    public static function install(Pool $dbPool)
+    public static function install(string $path, Pool $dbPool)
     {
         $navData = json_decode(file_get_contents(__DIR__ . '/Navigation.install.json'), true);
 
diff --git a/Admin/Installer.php b/Admin/Installer.php
index 191d8a3..ed24217 100644
--- a/Admin/Installer.php
+++ b/Admin/Installer.php
@@ -37,9 +37,9 @@ class Installer extends InstallerAbstract
     /**
      * {@inheritdoc}
      */
-    public static function install(Pool $dbPool, InfoManager $info)
+    public static function install(string $path, Pool $dbPool, InfoManager $info)
     {
-        parent::install($dbPool, $info);
+        parent::install($path, $dbPool, $info);
 
         switch ($dbPool->get('core')->getType()) {
             case DatabaseType::MYSQL:
diff --git a/Models/TaskElement.php b/Models/TaskElement.php
index 78634a5..55f5d90 100644
--- a/Models/TaskElement.php
+++ b/Models/TaskElement.php
@@ -94,6 +94,8 @@ class TaskElement
      */
     private $forwarded = 0;
 
+    private $media = [];
+
     /**
      * Constructor.
      *
diff --git a/Models/TaskElementMapper.php b/Models/TaskElementMapper.php
index 176c5a4..359e912 100644
--- a/Models/TaskElementMapper.php
+++ b/Models/TaskElementMapper.php
@@ -15,6 +15,7 @@
  */
 namespace Modules\Tasks\Models;
 
+use Modules\Media\Models\MediaMapper;
 use phpOMS\DataStorage\Database\DataMapperAbstract;
 use phpOMS\DataStorage\Database\RelationType;