Why does RestTemplate throw ResourceAccessException instead of HttpClientErrorException or HttpServerErrorException?

Question

Java

Hello. The application is based on a framework Spring. Through RestTemplatethe application communicates with other applications (REST). For some reason, if the response is sent code HTTP4xx and 5xx , then it is thrown out ResourceAccessException, and you can’t get any information in particular: neither the response body nor the code. I would like to use convenient classes HttpClientErrorExceptionand HttpServerErrorException.
Version Spring- 5.1.4.RELEASE .
The version Spring Boot(just in case) is 2.1.2.RELEASE .
Bean configuration RestTemplate:

@Bean
    public RestTemplate restTemplate() {
        RestTemplate restTemplate = new RestTemplate();
        //restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory());
        restTemplate.setRequestFactory(new BufferingClientHttpRequestFactory(new SimpleClientHttpRequestFactory()));
        List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>();
        interceptors.add(new LoggingHttpRequestInterceptor());
        restTemplate.setInterceptors(interceptors);
        restTemplate.getMessageConverters().add(0, mappingJackson2HttpMessageConverter());
        return restTemplate;
    }

This is the code to send a request and handle response errors:

ResponseEntity<R> response = null;
        try {
            response = restTemplate.exchange(url, httpMethod, new HttpEntity<>(objectToSend, headers), returnedObjectClass);
        } catch (HttpClientErrorException ex) {

            if (ex.getStatusCode() == HttpStatus.UNAUTHORIZED) {
                throw new ResourceAccessException("invalid_token", new HttpRetryException("invalid_token", HttpStatus.UNAUTHORIZED.value()));
            }

            if (restRequestType == RestRequestType.GET_BY_ID && ex.getStatusCode() == HttpStatus.NOT_FOUND) {
                return null;
            }
            throwRestReqExWithHttpErrExInfo(ex);

        } catch (HttpServerErrorException ex) {

            if (restRequestType == RestRequestType.UPDATE && isOptimisticLocking(ex)) {
                throw new OptimisticEntityLockException(objectToSend, "OptimisticLocking");
            }

            throwRestReqExWithHttpErrExInfo(ex);
        }

detailMessageat the departing exception, if the callee REST APIthrew 404:

I/O error on GET request for "http://localhost:9999/myproject-rest/api/v1/docs/1300": http://localhost:9999/myproject-rest/api/v1/docs/1300

Inside this eksepshena lies java.io.FileNotFoundException
And, as it seems to me, it used to work.