java: method does not override or implement a method from a supertype

При запуске моего небольшого spring-boot приложения получается ошибка java: method does not override or implement a method from a supertyp. Вот класс, откуда растёт эта ошибка:

package com.jm.spring_boot.service.security_config.handler;
import org.apache.tomcat.util.net.openssl.ciphers.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.WebAttributes;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.stereotype.Component;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.Collection;

@Component
public class LoginSuccessHandler implements AuthenticationSuccessHandler {
    private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();

    @Override
    public void onAuthenticationSuccess(HttpServletRequest httpServletRequest,
                                        HttpServletResponse httpServletResponse,
                                        Authentication authentication) throws IOException {
        httpServletResponse.setStatus(HttpServletResponse.SC_OK);


        handle(httpServletRequest, httpServletResponse, authentication);
        clearAuthenticationAttributes(httpServletRequest);
    }





    protected void handle(HttpServletRequest request,
                          HttpServletResponse response, Authentication authentication)
            throws IOException {

        String targetUrl = determineTargetUrl(authentication);

        redirectStrategy.sendRedirect(request, response, targetUrl);
    }

    protected String determineTargetUrl(Authentication authentication) {
        boolean isUser = false;
        boolean isAdmin = false;
        Collection<? extends GrantedAuthority> authorities
                = authentication.getAuthorities();
        for (GrantedAuthority grantedAuthority : authorities) {
            if (grantedAuthority.getAuthority().equals("ROLE_ADMIN")) {
                isAdmin = true;
                break;
            } else if (grantedAuthority.getAuthority().equals("ROLE_USER")) {
                isUser = true;
                break;
            }
        }

        if (isUser) {
            return "/user";

        } else if (isAdmin) {
            return "/admin";
        } else {
            throw new IllegalStateException();
        }
    }

    protected void clearAuthenticationAttributes(HttpServletRequest request) {
        HttpSession session = request.getSession(false);
        if (session == null) {
            return;
        }
        session.removeAttribute(WebAttributes.AUTHENTICATION_EXCEPTION);
    }

    public void setRedirectStrategy(RedirectStrategy redirectStrategy) {
        this.redirectStrategy = redirectStrategy;
    }

    protected RedirectStrategy getRedirectStrategy() {
        return redirectStrategy;
    }

    @Override
    public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, org.springframework.security.core.Authentication authentication) throws IOException, ServletException {
        
    }
}

Исходный код проекта: https://github.com/faraponoff/spring_boot311