diff --git a/app/Course/Requests/StoreRequest.php b/app/Course/Requests/StoreRequest.php
index b6ad0fee..70597150 100644
--- a/app/Course/Requests/StoreRequest.php
+++ b/app/Course/Requests/StoreRequest.php
@@ -6,6 +6,8 @@ use App\Course\Models\Course;
 use App\Member\Member;
 use Illuminate\Foundation\Http\FormRequest;
 use Illuminate\Support\Arr;
+use Illuminate\Validation\ValidationException;
+use Zoomyboy\LaravelNami\NamiException;
 
 class StoreRequest extends FormRequest
 {
@@ -36,12 +38,17 @@ class StoreRequest extends FormRequest
 
     public function persist(Member $member): void
     {
-        $course = Course::findOrFail($this->input('course_id'));
+        $course = Course::where('id', $this->input('course_id'))->firstOrFail();
         $payload = array_merge(
             $this->only(['event_name', 'completed_at', 'course_id', 'organizer']),
             ['course_id' => $course->nami_id],
         );
-        $namiId = auth()->user()->api()->createCourse($member->nami_id, $payload);
+
+        try {
+            $namiId = auth()->user()->api()->createCourse($member->nami_id, $payload);
+        } catch(NamiException $e) {
+            throw ValidationException::withMessages(['id' => 'Unbekannter Fehler']);
+        }
 
         $member->courses()->attach(
             $course,
diff --git a/packages/laravel-nami b/packages/laravel-nami
index 90d91088..12383090 160000
--- a/packages/laravel-nami
+++ b/packages/laravel-nami
@@ -1 +1 @@
-Subproject commit 90d91088a983107de634e55b4e24146923c99bed
+Subproject commit 1238309006a18aa1de37bbaac74c3089c128c582
diff --git a/tests/Feature/Course/StoreTest.php b/tests/Feature/Course/StoreTest.php
index 1d741171..f7dbb980 100644
--- a/tests/Feature/Course/StoreTest.php
+++ b/tests/Feature/Course/StoreTest.php
@@ -101,4 +101,22 @@ class StoreTest extends TestCase
         ]);
     }
 
+    public function testItReceivesUnknownErrors(): void
+    {
+        $this->login()->init();
+        $member = Member::factory()->defaults()->inNami(123)->createOne();
+        $course = Course::factory()->inNami(456)->createOne();
+        app(CourseFake::class)->doesntCreateWithError(123);
+
+        $response = $this->post("/member/{$member->id}/course", [
+            'course_id' => $course->id,
+            'completed_at' => '2021-01-02',
+            'event_name' => '::event::',
+            'organizer' => '::org::',
+        ]);
+                         
+        $response->assertSessionHasErrors(['id' => 'Unbekannter Fehler']);
+        $this->assertDatabaseCount('course_member', 0);
+    }
+
 }