diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e9b4371..4bbb819 100755
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -16,7 +16,7 @@ Generally, the development philosophy is result orientated. This means that anyo
 
 Developers  are encouraged to pick open tasks with high priorities according to their own skill level. Senior developers may  directly assign tasks to developers based on their importance. New  developers may find it easier to start with a task that has a low  priority as they often also have a lower difficulty.
 
-Open tasks can be found in the project overview: [PROJECT.md](../Project/PROJECT.md)
+Open tasks can be found in the project overview: [PROJECT.md](https://github.com/Karaka-Management/Organization-Guide/blob/master/Project/PROJECT.md)
 
 Tasks  currently in development are prefixed in the priority column with an  asterisk `*` and a name tag in the task description of the developer who is working on the task.
 
diff --git a/Controller/ApiController.php b/Controller/ApiController.php
index 8a895ea..f8ecae9 100755
--- a/Controller/ApiController.php
+++ b/Controller/ApiController.php
@@ -81,7 +81,7 @@ final class ApiController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiTaskCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : void
+    public function apiTaskCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         if (!empty($val = $this->validateTaskCreate($request))) {
             $response->set($request->uri->__toString(), new FormValidation($val));
@@ -283,7 +283,7 @@ final class ApiController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiTaskGet(RequestAbstract $request, ResponseAbstract $response, $data = null) : void
+    public function apiTaskGet(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         /** @var Task $task */
         $task = TaskMapper::get()->where('id', (int) $request->getData('id'))->execute();
@@ -303,10 +303,10 @@ final class ApiController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiTaskSet(RequestAbstract $request, ResponseAbstract $response, $data = null) : void
+    public function apiTaskSet(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         /** @var Task $old */
-        $old = clone TaskMapper::get()->where('id', (int) $request->getData('id'))->execute();
+        $old = TaskMapper::get()->where('id', (int) $request->getData('id'))->execute();
 
         /** @var Task $new */
         $new = $this->updateTaskFromRequest($request);
@@ -375,7 +375,7 @@ final class ApiController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiTaskElementCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : void
+    public function apiTaskElementCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         if (!empty($val = $this->validateTaskElementCreate($request))) {
             $response->set('task_element_create', new FormValidation($val));
@@ -550,7 +550,7 @@ final class ApiController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiTaskElementGet(RequestAbstract $request, ResponseAbstract $response, $data = null) : void
+    public function apiTaskElementGet(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         /** @var TaskElement $task */
         $task = TaskElementMapper::get()->where('id', (int) $request->getData('id'))->execute();
@@ -570,10 +570,10 @@ final class ApiController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiTaskElementSet(RequestAbstract $request, ResponseAbstract $response, $data = null) : void
+    public function apiTaskElementSet(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         /** @var TaskElement $old */
-        $old = clone TaskElementMapper::get()->where('id', (int) $request->getData('id'))->execute();
+        $old = TaskElementMapper::get()->where('id', (int) $request->getData('id'))->execute();
 
         /** @var TaskElement $new */
         $new = $this->updateTaskElementFromRequest($request);
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index fe0ea8f..ccd42af 100755
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -16,6 +16,7 @@ namespace Modules\Tasks\Controller;
 
 use Modules\Dashboard\Models\DashboardElementInterface;
 use Modules\Media\Models\MediaMapper;
+use Modules\Profile\Models\SettingsEnum;
 use Modules\Tasks\Models\AccountRelationMapper;
 use Modules\Tasks\Models\PermissionCategory;
 use Modules\Tasks\Models\TaskElementMapper;
@@ -56,7 +57,7 @@ final class BackendController extends Controller implements DashboardElementInte
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewTaskDashboard(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewTaskDashboard(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);
 
@@ -102,6 +103,7 @@ final class BackendController extends Controller implements DashboardElementInte
                     ->on(TaskElementMapper::TABLE . '.' . TaskElementMapper::PRIMARYFIELD, '=', AccountRelationMapper::TABLE . '.task_account_task_element')
                 ->andWhere(AccountRelationMapper::TABLE . '.task_account_account', '=', $request->header->account);
 
+        /** @var \Modules\Tasks\Models\Task[] $open */
         $open = TaskMapper::getAll()
             ->with('createdBy')
             ->with('taskElements')
@@ -122,12 +124,13 @@ final class BackendController extends Controller implements DashboardElementInte
      * {@inheritdoc}
      * @codeCoverageIgnore
      */
-    public function viewDashboard(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewDashboard(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);
         $view->setTemplate('/Modules/Tasks/Theme/Backend/dashboard-task');
         $view->addData('nav', $this->app->moduleManager->get('Navigation')->createNavigationMid(1001101001, $request, $response));
 
+        /** @var \Modules\Tasks\Models\Task[] $tasks */
         $tasks = TaskMapper::getAnyRelatedToUser($request->header->account)
             ->with('tags')
             ->with('tags/title')
@@ -154,11 +157,11 @@ final class BackendController extends Controller implements DashboardElementInte
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewTaskView(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewTaskView(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
     {
         $view = new TaskView($this->app->l11nManager, $request, $response);
 
-        $profileImage              = $this->app->appSettings->get(names: 'default_profile_image', module: 'Profile');
+        $profileImage              = $this->app->appSettings->get(names: SettingsEnum::DEFAULT_PROFILE_IMAGE, module: 'Profile');
         $image                     = MediaMapper::get()->where('id', (int) $profileImage->content)->execute();
         $view->defaultProfileImage = $image;
 
@@ -227,7 +230,7 @@ final class BackendController extends Controller implements DashboardElementInte
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewTaskCreate(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewTaskCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);
 
@@ -255,7 +258,7 @@ final class BackendController extends Controller implements DashboardElementInte
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewTaskAnalysis(RequestAbstract $request, ResponseAbstract $response, $data = null) : RenderableInterface
+    public function viewTaskAnalysis(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);
         $view->setTemplate('/Modules/Tasks/Theme/Backend/task-analysis');
diff --git a/Controller/SearchController.php b/Controller/SearchController.php
index b8c6f28..8a169cf 100755
--- a/Controller/SearchController.php
+++ b/Controller/SearchController.php
@@ -41,7 +41,7 @@ final class SearchController extends Controller
      *
      * @since 1.0.0
      */
-    public function searchTag(RequestAbstract $request, ResponseAbstract $response, $data = null) : void
+    public function searchTag(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         // join tags with tag l11n
         // join tags with tasks
diff --git a/Models/TaskElementMapper.php b/Models/TaskElementMapper.php
index e3f6bc1..ce1f227 100755
--- a/Models/TaskElementMapper.php
+++ b/Models/TaskElementMapper.php
@@ -76,7 +76,7 @@ final class TaskElementMapper extends DataMapperFactory
     /**
      * Belongs to.
      *
-     * @var array<string, array{mapper:string, external:string}>
+     * @var array<string, array{mapper:string, external:string, column?:string, by?:string}>
      * @since 1.0.0
      */
     public const BELONGS_TO = [
diff --git a/Models/TaskMapper.php b/Models/TaskMapper.php
index de77148..c3c0a46 100755
--- a/Models/TaskMapper.php
+++ b/Models/TaskMapper.php
@@ -89,7 +89,7 @@ final class TaskMapper extends DataMapperFactory
     /**
      * Belongs to.
      *
-     * @var array<string, array{mapper:string, external:string}>
+     * @var array<string, array{mapper:string, external:string, column?:string, by?:string}>
      * @since 1.0.0
      */
     public const BELONGS_TO = [
diff --git a/Models/TaskSeenMapper.php b/Models/TaskSeenMapper.php
index 8c1879d..c7cf193 100644
--- a/Models/TaskSeenMapper.php
+++ b/Models/TaskSeenMapper.php
@@ -49,7 +49,7 @@ final class TaskSeenMapper extends DataMapperFactory
     /**
      * Belongs to.
      *
-     * @var array<string, array{mapper:string, external:string}>
+     * @var array<string, array{mapper:string, external:string, column?:string, by?:string}>
      * @since 1.0.0
      */
     public const BELONGS_TO = [