diff --git a/Admin/Install/Navigation.php b/Admin/Install/Navigation.php
index 14170e7..8f511fc 100644
--- a/Admin/Install/Navigation.php
+++ b/Admin/Install/Navigation.php
@@ -36,7 +36,7 @@ class Navigation
      *
      * @since  1.0.0
      */
-    public static function install(string $path = null, DatabasePool $dbPool = null) : void
+    public static function install(string $path, DatabasePool $dbPool) : void
     {
         \Modules\Navigation\Admin\Installer::installExternal($dbPool, ['path' => __DIR__ . '/Navigation.install.json']);
     }
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index 9fb4344..ee88844 100644
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -18,8 +18,10 @@ use Modules\Kanban\Models\KanbanBoardMapper;
 
 use Modules\Kanban\Models\KanbanCardMapper;
 use Modules\Kanban\Models\PermissionState;
+
 use phpOMS\Account\PermissionType;
 use phpOMS\Asset\AssetType;
+use phpOMS\Contract\RenderableInterface;
 use phpOMS\Message\Http\RequestStatusCode;
 use phpOMS\Message\RequestAbstract;
 use phpOMS\Message\ResponseAbstract;
@@ -48,7 +50,7 @@ final class BackendController extends Controller
      */
     public function setupStyles(RequestAbstract $request, ResponseAbstract $response, $data = null) : void
     {
-        /** @var Head $head */
+        /** @var \phpOMS\Model\Html\Head $head */
         $head = $response->get('Content')->getData('head');
         $head->addAsset(AssetType::CSS, '/Modules/Kanban/Theme/Backend/css/styles.css');
     }
@@ -58,12 +60,12 @@ final class BackendController extends Controller
      * @param ResponseAbstract $response Response
      * @param mixed            $data     Generic data
      *
-     * @return \Serializable
+     * @return RenderableInterface
      *
      * @since  1.0.0
      * @codeCoverageIgnore
      */
-    public function viewKanbanDashboard(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
+    public function viewKanbanDashboard(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
     {
         $view = new View($this->app, $request, $response);
 
@@ -81,12 +83,12 @@ final class BackendController extends Controller
      * @param ResponseAbstract $response Response
      * @param mixed            $data     Generic data
      *
-     * @return \Serializable
+     * @return RenderableInterface
      *
      * @since  1.0.0
      * @codeCoverageIgnore
      */
-    public function viewKanbanBoard(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
+    public function viewKanbanBoard(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
     {
         $view = new View($this->app, $request, $response);
 
@@ -115,12 +117,12 @@ final class BackendController extends Controller
      * @param ResponseAbstract $response Response
      * @param mixed            $data     Generic data
      *
-     * @return \Serializable
+     * @return RenderableInterface
      *
      * @since  1.0.0
      * @codeCoverageIgnore
      */
-    public function viewKanbanBoardCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
+    public function viewKanbanBoardCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
     {
         $view = new View($this->app, $request, $response);
 
@@ -145,12 +147,12 @@ final class BackendController extends Controller
      * @param ResponseAbstract $response Response
      * @param mixed            $data     Generic data
      *
-     * @return \Serializable
+     * @return RenderableInterface
      *
      * @since  1.0.0
      * @codeCoverageIgnore
      */
-    public function viewKanbanCard(RequestAbstract $request, ResponseAbstract $response, $data = null) : \Serializable
+    public function viewKanbanCard(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
     {
         $view = new View($this->app, $request, $response);
 
diff --git a/Controller/Controller.php b/Controller/Controller.php
index ba2107d..9cd44f1 100644
--- a/Controller/Controller.php
+++ b/Controller/Controller.php
@@ -14,7 +14,6 @@ declare(strict_types=1);
 
 namespace Modules\Kanban\Controller;
 
-
 use phpOMS\Module\ModuleAbstract;
 use phpOMS\Module\WebInterface;
 
diff --git a/Models/KanbanBoardMapper.php b/Models/KanbanBoardMapper.php
index e285ca2..7c0c634 100644
--- a/Models/KanbanBoardMapper.php
+++ b/Models/KanbanBoardMapper.php
@@ -49,11 +49,6 @@ final class KanbanBoardMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, null|string>>
      * @since 1.0.0
-     */    /**
-     * Has many relation.
-     *
-     * @var array<string, array<string, string>>
-     * @since 1.0.0
      */
     protected static $hasMany = [
         'columns' => [
diff --git a/Models/KanbanCard.php b/Models/KanbanCard.php
index 25651c8..a9f07cf 100644
--- a/Models/KanbanCard.php
+++ b/Models/KanbanCard.php
@@ -14,7 +14,6 @@ declare(strict_types=1);
 
 namespace Modules\Kanban\Models;
 
-
 /**
  * Task class.
  *
diff --git a/Models/KanbanCardComment.php b/Models/KanbanCardComment.php
index a474d85..3eaf01b 100644
--- a/Models/KanbanCardComment.php
+++ b/Models/KanbanCardComment.php
@@ -14,7 +14,6 @@ declare(strict_types=1);
 
 namespace Modules\Kanban\Models;
 
-
 /**
  * Task class.
  *
diff --git a/Models/KanbanCardCommentMapper.php b/Models/KanbanCardCommentMapper.php
index 0a32573..f2d3463 100644
--- a/Models/KanbanCardCommentMapper.php
+++ b/Models/KanbanCardCommentMapper.php
@@ -47,11 +47,6 @@ final class KanbanCardCommentMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, null|string>>
      * @since 1.0.0
-     */    /**
-     * Has many relation.
-     *
-     * @var array<string, array<string, string>>
-     * @since 1.0.0
      */
     protected static $hasMany = [
         'media' => [
diff --git a/Models/KanbanCardMapper.php b/Models/KanbanCardMapper.php
index 36cee3f..c6f3ebb 100644
--- a/Models/KanbanCardMapper.php
+++ b/Models/KanbanCardMapper.php
@@ -66,11 +66,6 @@ final class KanbanCardMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, null|string>>
      * @since 1.0.0
-     */    /**
-     * Has many relation.
-     *
-     * @var array<string, array<string, string>>
-     * @since 1.0.0
      */
     protected static $hasMany = [
         'media'    => [
diff --git a/Models/KanbanColumnMapper.php b/Models/KanbanColumnMapper.php
index 36fb560..b0a2c52 100644
--- a/Models/KanbanColumnMapper.php
+++ b/Models/KanbanColumnMapper.php
@@ -45,11 +45,6 @@ final class KanbanColumnMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, null|string>>
      * @since 1.0.0
-     */    /**
-     * Has many relation.
-     *
-     * @var array<string, array<string, string>>
-     * @since 1.0.0
      */
     protected static $hasMany = [
         'cards' => [