Tell me how to route an image upload using flutter_quill_extensions 10.8.5

[kasreder]

Please let me know how to designate a route or if there is a link related to it. I've been searching for a few days, but I can't find it. I'm going crazy because Gpt keeps telling me the error code

SingleChildScrollView( scrollDirection: Axis.horizontal, child: quill.QuillToolbar.simple( controller: _controller, configurations: quill.QuillSimpleToolbarConfigurations( sharedConfigurations: const quill.QuillSharedConfigurations( locale: Locale('ko'), ), embedButtons: FlutterQuillEmbeds.toolbarButtons(), // 기본 Embeds ), ), ), Container( height: 300, padding: const EdgeInsets.all(10), decoration: BoxDecoration( border: Border.all(color: Colors.grey), ), child: quill.QuillEditor( controller: _controller, scrollController: ScrollController(), configurations: quill.QuillEditorConfigurations( placeholder: "본문에 내용을 입력하세요", scrollable: true, autoFocus: true, expands: true, enableInteractiveSelection: true, // ✨ readOnly 대체 옵션 readOnlyMouseCursor: SystemMouseCursors.click, // 읽기 전용 시 커서 변경 padding: EdgeInsets.zero, textSelectionThemeData: TextSelectionThemeData( cursorColor: Colors.purple, // 커서 색상을 보라색으로 설정 selectionColor: Colors.purple.withOpacity(0.5), // 선택 영역의 색상 설정 (필요에 따라) selectionHandleColor: Colors.purple, // 선택 핸들 색상 설정 (필요에 따라) ), embedBuilders: kIsWeb ? FlutterQuillEmbeds.editorWebBuilders() : FlutterQuillEmbeds.editorBuilders(), ), focusNode: FocusNode(), ), ),

                ElevatedButton(
        onPressed: _pickAndUploadImage,
        child: Text("이미지 추"),
      ),
      const SizedBox(height: 16),
      
      
        /// ✅ 이미지 선택 후 서버 업로드

Future _pickAndUploadImage() async {
final pickedFile = await _picker.pickImage(source: ImageSource.gallery);
if (pickedFile == null) return;

String imageUrl = await _uploadImage(File(pickedFile.path));
if (imageUrl.isNotEmpty) {
  // ✅ 이미지 업로드 후 에디터에 삽입
  final index = _controller.selection.baseOffset;
  final imageBlock = quill.BlockEmbed.image(imageUrl);
  _controller.document.insert(index, imageBlock);
}

}

/// ✅ 서버로 이미지 업로드 후 URL 반환
Future _uploadImage(File file) async {
try {
var request = http.MultipartRequest(
'POST',
Uri.parse('https://api.cosmosx.co.kr/upload'), // 🔹 서버 URL 변경
);
request.files.add(await http.MultipartFile.fromPath('image', file.path));

  var response = await request.send();
  if (response.statusCode == 200) {
    final responseData = jsonDecode(await response.stream.bytesToString());
    return responseData['url']; // 🔹 서버에서 반환한 이미지 URL
  } else {
    throw Exception('이미지 업로드 실패');
  }
} catch (e) {
  print('이미지 업로드 오류: $e');
  return '';
}

}
`