Ошибка при отправке данных

const [post, dispatch] = React.useReducer(AddPostReducer, {
    description: "",
    location: "",
    photos: []
});

React.useEffect(() => {
    if (!post.photos.length) return;
    dispatchRed(addPostAsyncAction(post, setErrors, setText));
    navigate("/");
}, [post.photos]);

function uploadPhotos(event: React.ChangeEvent<HTMLFormElement>) {
    event.preventDefault();
    if (!selectedImages.length) return;
    dispatch({ type: "SET_PHOTOS", payload: { selectedImages, setText } });
}

case SET_PHOTOS:
      const { selectedImages, setText } = action.payload;

      const formData = new FormData();
      selectedImages.map((image: any) => formData.append("photos", image));

      uploadPhotos(formData)
        .then((data) => {
          const { success, message, fileNames } = data;

          if (!success) {
            setText(message);
            return;
          }

          return {
            ...state,
            photos: fileNames
          };
        });

      return state;

function uploadPhotos(formData: any) {
  return trackPromise(fetch(`${REACT_APP_API_URL}/upload/photos`, {
    method: "POST",
    headers: {
      "Accept-Type": "application/json",
      Authorization: `Bearer ${Cookies.get("token") || ""}`,
    },
    body: formData
  })
    .then((response) => response.json())
    .then((data) => data));
}