diff --git a/src/Controller/CapsuleController.php b/src/Controller/CapsuleController.php
index 59797db643231b7efc74416817fa59cb315e3e26..dbf0c440a63e0778bbef6ccd949dd8609eb4f226 100644
--- a/src/Controller/CapsuleController.php
+++ b/src/Controller/CapsuleController.php
@@ -10,7 +10,6 @@ use App\Helper\StringHelper;
 use App\Repository\CapsuleRepository;
 use App\Builder\CapsuleBuilder;
 use App\Form\CreateCapsuleFormType;
-use App\Retriever\ProjectRetriever;
 use Knp\Component\Pager\PaginatorInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\Filesystem\Filesystem;
@@ -110,31 +109,6 @@ class CapsuleController extends AbstractController
         );
     }
 
-    /**
-     * @Route("capsule/{capsule_id}/video_preview", name="video_preview")
-     */
-    public function videoPreview(int $capsule_id): Response
-    {
-        chdir('../legacy/');
-        $file_system = new Filesystem();
-        $capsule = $this->capsule_repository->findOneBy(['id' => $capsule_id]);
-
-        if (! $capsule instanceof Capsule) {
-            throw new \Exception('The retrieved capsule is not an instance of Capsule.');
-        }
-
-        if (! $file_system->exists($capsule->getLinkPath())) {
-            return $this->render('project/project_not_found.html.twig');
-        }
-
-        $video_preview_image_link = $this->getVideoPreviewImageLink($capsule);
-
-        return $this->render(
-            'project/project_preview.html.twig',
-            ['video_preview_url' => $video_preview_image_link]
-        );
-    }
-
     /**
      * @Route("capsule/edit/{path}", name="edit_capsule")
      */
@@ -148,12 +122,12 @@ class CapsuleController extends AbstractController
 
         $capsule = $this->capsule_repository->findOneBy(['link_path' => $path]);
         if (null === $capsule) {
-            $this->addFlash('warning', $translator->trans('capsule.edit.not_found'));
+            $this->addFlash('warning', $this->translator->trans('capsule.edit.not_found'));
             return $this->redirectToRoute('capsule_list');
         }
 
         if (! $capsule->getEditors()->contains($current_user)) {
-            $this->addFlash('warning', $translator->trans('capsule.edit.not_allowed'));
+            $this->addFlash('warning', $this->translator->trans('capsule.edit.not_allowed'));
             return $this->redirectToRoute('capsule_list');
         }
 
@@ -327,17 +301,4 @@ class CapsuleController extends AbstractController
 
         return $capsule;
     }
-
-    private function getVideoPreviewImageLink(Capsule $capsule): string
-    {
-        $project_retriever = new ProjectRetriever($capsule);
-        $video_url = $project_retriever->getVideoUrl();
-        $video_id = $project_retriever->getVideoId($video_url);
-
-        if (strpos($video_url, 'yout') !== false) {
-            return 'https://img.youtube.com/vi/' . $video_id . '/maxresdefault.jpg';
-        }
-
-        return 'https://vumbnail.com/' . $video_id . '.jpg';
-    }
 }
diff --git a/src/Entity/Capsule.php b/src/Entity/Capsule.php
index 28ecd46c74942f9c9dd35e5c1cb3fd405f59a64b..08ff123ce5e6625d0200dfc0cfdd0a2760e4d94f 100644
--- a/src/Entity/Capsule.php
+++ b/src/Entity/Capsule.php
@@ -211,4 +211,24 @@ class Capsule
     {
         return $this->editors;
     }
+
+
+    public function getVideoPreviewImageLink(): ?string
+    {
+        $file_system = new Filesystem();
+
+        if (! $file_system->exists('../legacy/' . $this->getLinkPath())) {
+            return null;
+        }
+
+        $project_retriever = new ProjectRetriever($this);
+        $video_url = $project_retriever->getVideoUrl();
+        $video_id = $project_retriever->getVideoId($video_url);
+
+        if (strpos($video_url, 'yout') !== false) {
+            return 'https://img.youtube.com/vi/' . $video_id . '/maxresdefault.jpg';
+        }
+
+        return 'https://vumbnail.com/' . $video_id . '.jpg';
+    }
 }
diff --git a/templates/capsule/index.html.twig b/templates/capsule/index.html.twig
index 23bb03df93fff5bc68fc3633e493489ce73b7b51..24c3d22ac50d87f75ee65a19e0f80327b8b69087 100644
--- a/templates/capsule/index.html.twig
+++ b/templates/capsule/index.html.twig
@@ -56,22 +56,13 @@
 
             <div class="d-flex flex-column flex-md-row justify-content-center align-items-center">
                 <div class="m-4 ratio ratio-16x9">
-{#                    <img src="{{ capsule.getVideoPreviewImageLink() }}" alt="video preview">#}
-                    {#                    <img src="/capsule/{{ capsule.getId() }}/video_preview" alt="video preview">#}
+                    {% if capsule.getVideoPreviewImageLink() is null %}
+                        <img src="{{ asset('build/images/project_not_found.jpg') }}" alt="video preview">
+                    {% else %}
+                        <img src="{{ capsule.getVideoPreviewImageLink() }}" alt="video preview">
+                    {% endif %}
                 </div>
 
-{#                        {% if 'yout' in video_url %}#}
-{#                            <img src="https://img.youtube.com/vi/{{ capsule.getVideoId() }}maxresdefault.jpg">#}
-{#                        {% else %}#}
-{#                            <img src="https://vumbnail.com/{{ capsule.getVideoId() }}.jpg">#}
-                        {#                    <div class="m-4 ratio ratio-16x9">#}
-{#                        <iframe#}
-{#                                src="/capsule/preview/{{ capsule.getLinkPath() }}"#}
-{#                                allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"#}
-{#                                allowfullscreen>#}
-{#                        </iframe>#}
-{#                    </div>#}
-
             <div class="d-flex flex-column justify-content-center m-2 pe-2">
                 <i class="fa-thin fa-gears"></i>
 
diff --git a/templates/project/project_not_found.html.twig b/templates/project/project_not_found.html.twig
index 0112bbe8103816565d42a611c18f10a6537a7ac0..05a7eba826a994468a07e77d0ead33934138e4c0 100644
--- a/templates/project/project_not_found.html.twig
+++ b/templates/project/project_not_found.html.twig
@@ -1,13 +1,13 @@
 {% extends 'layout.html.twig' %}
 
 {% block title %}
-	{{ 'project.not_found'|trans }}
+	{{ 'project.not_exist'|trans }}
 	-
 	{{ parent() }}
 {% endblock %}
 
 {% block body %}
 	<div class="col-10 col-md-8 col-lg-6 col-xl-5 col-xxl-6 m-auto d-flex flex-row align-items-center justify-content-center mb-5 alert alert-warning" role="status">
-		<span class="p-5">{{ 'project.not_found' | trans }}</span>
+		<span class="p-5">{{ 'project.not_exist' | trans }}</span>
 	</div>
 {% endblock %}
\ No newline at end of file
diff --git a/tests/functional/ProjectControllerTest.php b/tests/functional/ProjectControllerTest.php
index 04168284371b13473a79b8586e269c4c3c1bcf16..7db3e685f9b301063081f5f4ad7000b24f91192f 100644
--- a/tests/functional/ProjectControllerTest.php
+++ b/tests/functional/ProjectControllerTest.php
@@ -86,7 +86,7 @@ class ProjectControllerTest extends WebTestCase
         $submit_button = $crawler->selectButton('Create a capsule');
         $this->form = $submit_button->form();
 
-        $video_url = "https://TestUrl";
+        $video_url = "https://www.youtube.com/watch?v=dQw4w9WgXcQ&ab_channel=RickAstley";
         $this->form['create_capsule_form[name]'] = self::CAPSULE_NAME;
         $this->form['create_capsule_form[video_url]'] = $video_url;
 
@@ -123,7 +123,7 @@ class ProjectControllerTest extends WebTestCase
 
         $video_url_in_xml_file = $video_node->getAttribute('url');
 
-        $this->assertEquals($video_url, $video_url_in_xml_file);
+        $this->assertEquals($video_url, htmlspecialchars_decode($video_url_in_xml_file));
         $this->assertSame(self::CAPSULE_NAME, $capsule_name_in_db);
     }
 
@@ -293,7 +293,7 @@ class ProjectControllerTest extends WebTestCase
         $submit_button = $crawler->selectButton('Create a capsule');
         $this->form = $submit_button->form();
 
-        $video_url = "https://TestUrl";
+        $video_url = "https://www.youtube.com/watch?v=dQw4w9WgXcQ&ab_channel=RickAstley";
         $this->form['create_capsule_form[name]'] = self::CAPSULE_NAME;
         $this->form['create_capsule_form[video_url]'] = $video_url;