Use bootstrap 5 form theme

config/packages/twig.yaml

@@ -1,9 +1,8 @@
 twig:
-    default_path: '%kernel.project_dir%/templates'
+    file_name_pattern: '*.twig'
     form_themes:
-        - 'form/layout.html.twig'
+        - 'bootstrap_5_layout.html.twig'
         - 'form/fields.html.twig'
-    file_name_pattern: '*.twig'
 
 when@test:
     twig:

tests/Controller/Admin/BlogControllerTest.php

@@ -133,8 +133,11 @@ public function testAdminNewDuplicatedPost(): void
         // post titles must be unique, so trying to create the same post twice should result in an error
         $this->client->submit($form);
 
-        $this->assertSelectorTextContains('form .invalid-feedback .form-error-message', 'This title was already used in another blog post, but they must be unique.');
         $this->assertSelectorExists('form #post_title.is-invalid');
+        $this->assertSelectorTextContains(
+            'form .invalid-feedback',
+            'This title was already used in another blog post, but they must be unique.'
+        );
     }
 
     public function testAdminShowPost(): void