邮件发送后，消息显示错误：您的查询已成功发送

如何解决邮件发送后，消息显示错误：您的查询已成功发送

在下面的屏幕截图中需要有关与 Asp.Net Core MVC 相关的问题的帮助，因为我对返回的查询进行了汇总，但消息“错误”的标题即将到来，因为我只想仅呈现成功消息，谢谢。 .. Please refer the screenshot attached to have more clearity on issue

下面是我的表单代码

<form action="/ContactUs/ContactSubmitQuery" method="post" role="form" class="PHP-email-form" asp-antiforgery="true">
                @Html.AntiForgeryToken()
                <div class="form-row">
                    <div class="col-lg-6 sm-6 form-group">
                        <label>Name</label>
                        <input type="text" name="cname" class="form-control input-css click-cg textBox" id="cname" placeholder="Name"
                               data-rule="minlen:4" data-msg="Please enter at least 4 chars" />
                        <div class="validate"></div>
                    </div>
                    <div class="col-lg-6 sm-6 form-group">
                        <label>Email</label>
                        <input type="email" class="form-control input-css click-cg textBox" name="email" id="email" placeholder="Email"
                               data-rule="email" data-msg="Please enter a valid email" />
                        <div class="validate"></div>
                    </div>
                </div>


                <div class="form-group">
                    <label>Description</label>
                    <textarea class="form-control click-cg textBox" name="description" rows="5" data-rule="required"
                              data-msg="Please write something for us" placeholder="Description"></textarea>
                    <div class="validate"></div>
                </div><br>
                <div class="mb-3">
                    <div class="loading">Loading</div>
                    <div class="error-message"></div>
                    <div class="sent-message">Your message has been sent. Thank you!</div>
                </div>
                <div class="text-center"><button type="submit">Send</button></div>
            </form>

以下是我的控制器代码，其中在发送电子邮件后使用 OK 返回成功消息

public IActionResult ContactSubmitQuery()
    {
        string name = Request.Form["cname"];
        string email = Request.Form["email"];
        string message = Request.Form["description"];
        string htmlContent = string.Format("name:{0} <br/> email:{1} <br/> message:{2}",name,email,message);

        SendEmail send = new SendEmail("Test Contact",EmailType.Single);
        send.Send(htmlContent);
        //return Ok("Your Query submitted Successfully");
        return Ok(RedirectToAction("SuccessMessage"));
    }