diff --git a/.github/user_bug_report.md b/.github/user_bug_report.md
index 9e5f2a5..4b92a8e 100755
--- a/.github/user_bug_report.md
+++ b/.github/user_bug_report.md
@@ -8,9 +8,11 @@ assignees: ''
 ---
 
 # Bug Description
+
 A clear and concise description of what the bug is.
 
 # How to Reproduce
+
 Steps to reproduce the behavior:
 
 1. Go to '...'
@@ -19,16 +21,20 @@ Steps to reproduce the behavior:
 4. See error
 
 # Expected Behavior
+
 A clear and concise description of what you expected to happen.
 
 # Screenshots
+
 If applicable, add screenshots to help explain your problem.
 
 # System Information
- - System: [e.g. PC or iPhone11, ...]
- - OS: [e.g. iOS]
- - Browser [e.g. chrome, safari]
- - KarakaVersion [e.g. 22]
+
+- System: [e.g. PC or iPhone11, ...]
+- OS: [e.g. iOS]
+- Browser [e.g. chrome, safari]
+- KarakaVersion [e.g. 22]
 
 # Additional Information
+
 Add any other context about the problem here.
diff --git a/Controller/ApiController.php b/Controller/ApiController.php
index 8af6c7b..75fc5e8 100755
--- a/Controller/ApiController.php
+++ b/Controller/ApiController.php
@@ -154,8 +154,8 @@ final class ApiController extends Controller
     private function validateKanbanCardCreate(RequestAbstract $request) : array
     {
         $val = [];
-        if (($val['title'] = empty($request->getData('title')))
-            || ($val['column'] = empty($request->getData('column')))
+        if (($val['title'] = !$request->hasData('title'))
+            || ($val['column'] = !$request->hasData('column'))
             || ($val['status'] = (
                 $request->hasData('status')
                 && !CardStatus::isValidValue((int) $request->getData('status'))
@@ -245,8 +245,8 @@ final class ApiController extends Controller
     private function validateKanbanCardCommentCreate(RequestAbstract $request) : array
     {
         $val = [];
-        if (($val['plain'] = empty($request->getData('plain')))
-            || ($val['card'] = empty($request->getData('card')))
+        if (($val['plain'] = !$request->hasData('plain'))
+            || ($val['card'] = !$request->hasData('card'))
         ) {
             return $val;
         }
@@ -338,7 +338,7 @@ final class ApiController extends Controller
     private function validateKanbanBoardCreate(RequestAbstract $request) : array
     {
         $val = [];
-        if (($val['title'] = empty($request->getData('title')))
+        if (($val['title'] = !$request->hasData('title'))
             || ($val['status'] = (
                 $request->hasData('status')
                 && !CardStatus::isValidValue((int) $request->getData('status'))
@@ -454,8 +454,8 @@ final class ApiController extends Controller
     private function validateKanbanColumnCreate(RequestAbstract $request) : array
     {
         $val = [];
-        if (($val['title'] = empty($request->getData('title'))
-            || ($val['board'] = empty($request->getData('board'))))
+        if (($val['title'] = !$request->hasData('title')
+            || ($val['board'] = !$request->hasData('board')))
         ) {
             return $val;
         }
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index b806145..3fe8043 100755
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -118,7 +118,7 @@ final class BackendController extends Controller
 
         if ($board->createdBy->getId() !== $accountId
             && !$this->app->accountManager->get($accountId)->hasPermission(
-                PermissionType::READ, $this->app->unitId, $this->app->appName, self::NAME, PermissionCategory::BOARD, $board->getId())
+                PermissionType::READ, $this->app->unitId, $this->app->appId, self::NAME, PermissionCategory::BOARD, $board->getId())
         ) {
             $view->setTemplate('/Web/Backend/Error/403_inline');
             $response->header->status = RequestStatusCode::R_403;
@@ -183,7 +183,7 @@ final class BackendController extends Controller
         $accountId = $request->header->account;
 
         if (!$this->app->accountManager->get($accountId)->hasPermission(
-                PermissionType::CREATE, $this->app->unitId, $this->app->appName, self::NAME, PermissionCategory::BOARD)
+                PermissionType::CREATE, $this->app->unitId, $this->app->appId, self::NAME, PermissionCategory::BOARD)
         ) {
             $view->setTemplate('/Web/Backend/Error/403_inline');
             $response->header->status = RequestStatusCode::R_403;
@@ -229,7 +229,7 @@ final class BackendController extends Controller
 
         if ($card->createdBy->getId() !== $accountId
             && !$this->app->accountManager->get($accountId)->hasPermission(
-                PermissionType::READ, $this->app->unitId, $this->app->appName, self::NAME, PermissionCategory::CARD, $card->getId())
+                PermissionType::READ, $this->app->unitId, $this->app->appId, self::NAME, PermissionCategory::CARD, $card->getId())
         ) {
             $view->setTemplate('/Web/Backend/Error/403_inline');
             $response->header->status = RequestStatusCode::R_403;
diff --git a/tests/Controller/ApiControllerTest.php b/tests/Controller/ApiControllerTest.php
index de3daeb..166acba 100755
--- a/tests/Controller/ApiControllerTest.php
+++ b/tests/Controller/ApiControllerTest.php
@@ -68,7 +68,7 @@ final class ApiControllerTest extends \PHPUnit\Framework\TestCase
 
         $permission = new AccountPermission();
         $permission->setUnit(1);
-        $permission->setApp('backend');
+        $permission->setApp(2);
         $permission->setPermission(
             PermissionType::READ
             | PermissionType::CREATE