diff --git a/Admin/Install/Navigation.php b/Admin/Install/Navigation.php
index ce8f1fe..a15f1fc 100644
--- a/Admin/Install/Navigation.php
+++ b/Admin/Install/Navigation.php
@@ -38,7 +38,17 @@ class Navigation
      */
     public static function install(string $path = null, DatabasePool $dbPool = null) : void
     {
-        $navData = \json_decode(file_get_contents(__DIR__ . '/Navigation.install.json'), true);
+        $navFile = \file_get_contents(__DIR__ . '/Navigation.install.json');
+
+        if ($navFile === false) {
+            throw new \Exception();
+        }
+
+        $navData = \json_decode($navFile, true);
+
+        if ($navData === false) {
+            throw new \Exception();
+        }
 
         $class = '\\Modules\\Navigation\\Admin\\Installer';
         /** @var $class \Modules\Navigation\Admin\Installer */
diff --git a/Models/ImporterAbstract.php b/Models/ImporterAbstract.php
index 879f667..79cbdbf 100644
--- a/Models/ImporterAbstract.php
+++ b/Models/ImporterAbstract.php
@@ -15,6 +15,7 @@ declare(strict_types=1);
 namespace Modules\Exchange\Models;
 
 use phpOMS\DataStorage\Database\Connection\ConnectionInterface;
+use phpOMS\Message\RequestAbstract;
 
 /**
  * Import abstract
@@ -37,13 +38,13 @@ abstract class ImporterAbstract
     /**
      * Constructor
      *
-     * @param ConnectionInterface $local  Database connection
+     * @param ConnectionInterface $local Database connection
      *
      * @since  1.0.0
      */
     public function __construct(ConnectionInterface $local)
     {
-        $this->remote = $remote;
+        $this->local = $local;
     }
 
     /**