Fixed Spring deprecated method in ErrorController

import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.boot.autoconfigure.web.servlet.error.AbstractErrorController;

import org.springframework.boot.web.error.ErrorAttributeOptions;

import org.springframework.boot.web.servlet.error.ErrorAttributes;

import org.springframework.http.MediaType;

import org.springframework.web.bind.annotation.RequestMapping;

    @RequestMapping(produces = MediaType.TEXT_XML_VALUE)

    public void errorText(HttpServletRequest request, HttpServletResponse response) throws Exception {

        Map<String, Object> errors = super.getErrorAttributes(request, true);

        ErrorAttributeOptions options = ErrorAttributeOptions.of(ErrorAttributeOptions.Include.MESSAGE);

        Map<String, Object> errors = super.getErrorAttributes(request, options);

        response.setContentType("text/plain;charset=UTF-8");

        response.setCharacterEncoding("UTF-8");

        String errorMessage = (String) errors.get("message");