Angular не получается отправить dto в Rest контроллер Spring

Rest Controller принимает обьект IssueDto:

   @Override
    public ResponseEntity<Void> createIssue(@Valid IssueDto dto) {
        AddIssueReq req = new AddIssueReq();
        req.setApplicantId(dto.getApplicantId().toString());
        req.setFIO(dto.getFio());
        req.setPhone(dto.getPhone());
        req.setSubject(dto.getSubject());
        req.setDescription(dto.getDescription());
        req.setEmail(dto.getEmail());
//        раскомментировать  и вставить в метод createIssue переменную red чтобы обращения попадали в редмайн
//        Integer red = feedbackClient.sendIssue(req,file,filename,contentType);
//        System.out.println(red);
        return ResponseEntity.ok(pguApiService.createIssue(dto));
    }

Когда я с фронта пытаюсь отправить этот обьект :

 issue = {} as IssueDto;



  saveIssue(value: any) {
    this.isLoading = true;

    this.issue.applicantId = this.applicantId
    this.issue.description = value.description;
    this.issue.subject = value.subject;
    this.issue.email = this.applicantEmail
    this.issue.phone = this.applicantPhone
    this.issue.fio = this.applicantFio
    this.attachment.base64file = this.file
    this.attachment.contentType = this.contentType
    this.attachment.name = this.filename
    this.issue.formAttachment = this.attachment
    this.service.createIssue(this.issue).subscribe()
    this.openDialog();
    this.isLoading = false;

  }

В консоли получаю:

core.js:7187 ERROR 
HttpErrorResponse {headers: HttpHeaders, status: 500, statusText: "Internal Server Error", url: "http://localhost:4200/rest/api/feedback/addIssue", ok: false, …}
error: {timestamp: "2020-08-18T12:57:20.083+0000", status: 500, error: "Internal Server Error", message: "status 500 reading PguApiClient#createIssue(IssueDto)", trace: "feign.FeignException$InternalServerError: status 5…va:61)↵    at java.lang.Thread.run(Thread.java:748)↵", …}
headers: HttpHeaders {normalizedNames: Map(0), lazyUpdate: null, lazyInit: ƒ}
message: "Http failure response for http://localhost:4200/rest/api/feedback/addIssue: 500 Internal Server Error"
name: "HttpErrorResponse"
ok: false
status: 500
statusText: "Internal Server Error"
url: "http://localhost:4200/rest/api/feedback/addIssue"
__proto__: HttpResponseBase

возможно я не правильно преобразую интерфейс IssueDto в обьект ?