Switched getting files with axios request to the api platform.

src/Controller/BookController.php

@@ -111,13 +111,6 @@ class BookController extends AbstractController
         ]);
     }
 
-    #[Route('/{id}/files', name: 'app_book_file', methods: ['GET'])]
-    public function files(Book $book): JsonResponse
-    {
-        return $this->json($book->getFiles(), context: [AbstractNormalizer::IGNORED_ATTRIBUTES => ['book']]);
-    }
-
-
     #[Route('/{id}/edit', name: 'app_book_edit', methods: ['GET', 'POST'])]
     public function edit(
         Request $request,

src/Entity/Book.php

@@ -2,11 +2,14 @@
 
 namespace App\Entity;
 
+use ApiPlatform\Core\Annotation\ApiResource;
+use ApiPlatform\Core\Annotation\ApiSubresource;
 use App\Repository\BookRepository;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
 
+#[ApiResource]
 #[ORM\Entity(repositoryClass: BookRepository::class)]
 class Book
 {
@@ -33,6 +36,7 @@ class Book
     #[ORM\Column(type: 'string', length: 255, nullable: true)]
     private $subtitle;
 
+    #[ApiSubresource]
     #[ORM\OneToMany(mappedBy: 'book', targetEntity: File::class, orphanRemoval: true)]
     private $files;