Thymeleaf Neither BindingResult nor plain target object for bean name 'person' available as request attribute
<p>From what I can tell this is set up correctly but I am getting the following error:</p>

<pre><code>java.lang.IllegalStateException: Neither BindingResult nor plain target 
object for bean name 'person' available as request attribute
</code></pre>

<p>Form</p>

<pre><code>&lt;form action="#" th:action="@{/person}" th:object="${person}" method="post" th:required="required"&gt;
    &lt;input type="text" th:field="*{subject}" class="contact col-md-6" placeholder="Name *" th:required="required"/&gt;
    &lt;input type="text" th:field="*{name}" class="contact col-md-6" placeholder="Name *" th:required="required"/&gt;
    &lt;input type="text" th:field="*{lastName}" class="contact col-md-6" placeholder="Name *" th:required="required"/&gt;
    &lt;input type="email" th:field="*{email}" class="contact noMarr col-md-6" placeholder="E-mail address *" th:required="required"/&gt;
    &lt;textarea name="comment" class="contact col-md-12" th:field="*{message}" placeholder="Message *"&gt;&lt;/textarea&gt;
    &lt;input type="submit" id="submit" class="contact submit" value="Send message"/&gt;
&lt;/form&gt;
</code></pre>

<p>Person.java</p>

<pre><code>public class Person {

    private int id;
    private String name;
    private String lastName;
    private String email;
    private String subject;
    private String message;

    ....
}
</code></pre>

<p>Controller</p>

<pre><code>@Controller
public class ApplicationController {

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String indexPage() {
        return "index";
    }

    @RequestMapping(value="/person", method=RequestMethod.GET)
    public String contactForm(Model model) {
        model.addAttribute("person", new Person());
        return "index";
    }

    @RequestMapping(value="/person", method=RequestMethod.POST)
    public String contactSubmit(@ModelAttribute Person person, Model model) {
        model.addAttribute("person", person);
        return "result";
    }
}
</code></pre>

<p>I looked at <a href="https://spring.io/guides/gs/handling-form-submission/" rel="nofollow noreferrer">Spring-boot and Thmeleaf setup</a> and it looks like my setup is identical.</p>

<p>--------------------- Update 1 -----------------------</p>

<p>I have changed my post method to include BindingResult with no success.</p>

<pre><code>@RequestMapping(value="/person", method=RequestMethod.POST)
public String contactSubmit(@Valid @ModelAttribute Person person, BindingResult bindingResult, Model model) {

    if(bindingResult.hasErrors()){
        System.out.println("There was a error "+bindingResult);
        System.out.println("Person is: "+ person.getEmail());
        return "index";
    }

    model.addAttribute("person", person);
    return "result";
}
</code></pre>