Thymeleaf验证错误未显示

Question

我不知道发生了什么，但是百里香验证错误不起作用。我没有更改代码。我有一个jakson绑定异常，我解决了。之后，错误消息没有显示，但是bindingresult在控制器中显示了错误。

下面是代码。请帮忙。我必须尽快提交这个项目。

<div class="form-group">
                        <label for="exampleTextarea1">Description</label>
                                        <textarea class="form-control" id="exampleTextarea1"
                                            th:field="*{description}" rows="2"></textarea>
                                        <div th:if="${#fields.hasErrors('description')}"
                                            th:style="'color:red'">
                                            <p>Enter description</p>
                                        </div>

                                    </div>

表格标签

<form class="forms-sample"
                                    th:action="@{~/AdminController/saveImage}"
                                    th:object="${uploadData}" method="post">

控制器

  @Autowired
  Environment var;

    @Autowired
    CategoriesServices categoriesServices;
    @Autowired
    SubCategoriesServices subcategoriServices;
    @PostMapping("saveImage")
    String saveImage( @Valid @ModelAttribute("uploadData")   UploadData uploadData ,BindingResult result,Model model) throws Exception {
        if(result.hasErrors()) {
        log.warning("errors");
        goToImage(model);
        return "uploadImages";
        }



        goToImage(model);
        return "uploadImages";
    }

    private void goToImage(Model model) throws Exception {
        UploadData data=new UploadData();
        data.setCategory(categoriesServices.getCategories().getCategorieslist());
        model.addAttribute("uploadData",data);
    }