Access Denied - http://localhost:8080/swagger-ui.html/

Bom dia a todos, quando tento acessar o endereço tenho acesso negado. Podem dar uma ajuda?

Segue minhas classes

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import br.com.alura.forum.repository.UsuarioRepository;

@EnableWebSecurity
@Configuration
public class SecurityConfigurations extends WebSecurityConfigurerAdapter{

    @Autowired
    private AutenticacaoService autenticacaoService;
    @Autowired
    private TokenService tokenService;
    @Autowired
    private UsuarioRepository usuarioRepository;

    @Override
    @Bean
    protected AuthenticationManager authenticationManager() throws Exception {
        return super.authenticationManager();
    }

    //configuracoes de autenticacao
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(autenticacaoService).passwordEncoder(new BCryptPasswordEncoder());

    }
    //configuracao de autorizacao
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            //.antMatchers("/topicos").permitAll();//aqui libera todos os verbos
            .antMatchers(HttpMethod.GET,"/topicos").permitAll()
            .antMatchers(HttpMethod.GET,"/topicos/*").permitAll()
            .antMatchers(HttpMethod.POST,"/auth").permitAll()
            .antMatchers(HttpMethod.GET,"/actuator/**").permitAll()
            .anyRequest().authenticated()
            .and().csrf().disable()
            .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
            .and().addFilterBefore(new AutenticacaoViaTokenFilter(tokenService,usuarioRepository), UsernamePasswordAuthenticationFilter.class);
    }

    //configuracoes de recursos estaticos js, css, imagens.....
    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/**.html", "/v2/api-docs", "/webjars/**","/configuration/**", "/swagger-resources/**");
    }

    public static void main(String args[]) {
        System.out.println(new BCryptPasswordEncoder().encode("123456"));

    }
}

package br.com.alura.forum.swagger;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import br.com.alura.forum.modelo.Usuario;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

@Configuration
public class SwaggerConfigurations {

    @Bean
    public Docket forumApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .select()
                .apis(RequestHandlerSelectors.basePackage("br.com.alura.forum"))
                .paths(PathSelectors.ant("/**"))
                .build()
                .ignoredParameterTypes(Usuario.class);
    }

}

@SpringBootApplication
@EnableSpringDataWebSupport//para habiltiar a paginação e ordenação
@EnableCaching
@EnableSwagger2
public class ForumApplication {

    public static void main(String[] args) {
        SpringApplication.run(ForumApplication.class, args);
    }

}