Create a fragment for a form in Thymeleaf (and spring) - spring

Question

First I created a form in a simple HTML with Thymeleaf and everything was fine. Then moved to step 2 and I relocated my form to a fragment. I called the fragment like this:
<div th:insert="~{address::form($(address)}"></div>
and the fragment (which is in address.html) is like this:
<form th:fragment="form(address)" action="#" th:action="#{/address}" th:object="${address}" method="post">
<label>Street<label><span><input type="text" th:field="*{street}"></span>
<label>County:</label>
<span>
<select th:field="*{county}">
<option th:each="s : ${countyList}" th:value="${s.value}" th:text="${s.text}"></option>
</select>
</span>
...
but this is not working and it's throwing:
java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'street' available as request attribute
Please help with how to move an entire form into a Thymeleaf fragment? Also please add ideas for combos, so I can get their list from the model bean. Thank you!
PS the controller looks like this for now (add and edit ) buti will work to make it 1 function instead:
#GetMapping(value="/address")
public String newAddress(AddressModel address, Model model) {
model.addAttribute("address", address);
model.addAttribute("countyList", countyService.listCombo());
...
return "index";
}
#GetMapping(value="/address/{id}")
public String editAddress(Model model, #PathVariable("id") Long id) {
AddressModel address = addressService.load(id);
model.addAttribute("address", address);
model.addAttribute("countyList", countyService.listCombo());
...
return "index";
}

Answer 1

In my case the problem was coming from an unexpected direction. I have put 2 fragments address::form (for creating the form) and address::list (for showing a list of addresses) in the same file and somehow, for some yet unknown reason these 2 fragments are not working fine when in the same file. And the error was not very helpful. But as soon as I put them in 2 separate files like this: addressForm::form and addressList::list everything was ok. Interesting that if I keep the fragments in the same file but swap the order in which they are defined I can render the page correctly but I still get the error in the logs. Strange things.