Não sou redirecionado após login e sec:authorize=

Pessoal, não estou sendo redirecionado automaticamente para a página home após efetuar login. É retornado que há um erro no mapeamento. Tive que colocar "defaultSuccessUrl("/home")" para conseguir direcionar para a home.

Além disso, o sec:authorize="isAuthenticated()" não está funcionando. Aparece no topo da página o "login" e "logout".

Minha WebSecurityConfig:

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
         http
            .authorizeRequests()
                .anyRequest().authenticated()
            .and()
            .formLogin(form -> form
                .loginPage("/login")
                .permitAll().defaultSuccessUrl("/home")
            );

        }

    @Bean
    @Override
    public UserDetailsService userDetailsService() {
        UserDetails user =
             User.withDefaultPasswordEncoder()
                .username("vitor")
                .password("vitor")
                .roles("ADM")
                .build();

        return new InMemoryUserDetailsManager(user);
    }

}

Meu pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.1.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>br.com.alura.mvc</groupId>
    <artifactId>mudi</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>mudi</name>
    <description>Projeto Spring MVC da Alura</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>




        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-springsecurity5</artifactId>
        </dependency>



        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

meu LoginController

@Controller
public class LoginController {

    @GetMapping
    @RequestMapping("/login")
    public String login() {
        return "login";
    }
}

E meu base.html:

<head th:fragment="head">
<meta charset="UTF8" />
<link
    href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta3/dist/css/bootstrap.min.css"
    rel="stylesheet"
    integrity="sha384-eOJMYsd53ii+scO/bJGFsiCZc+5NDVN2yr8+0RDqr0Ql0h+rP48ckxlpbzKgwra6"
    crossorigin="anonymous">
<link rel="preconnect" href="https://fonts.gstatic.com">
<link
    href="https://fonts.googleapis.com/css2?family=Handlee&display=swap"
    rel="stylesheet">
<style>
.logoContainer {
    background-color: #47bcff;
    color: #fff
}

.fonteLogo {
    font-family: 'Handlee', cursive;
    font-size: 2.5rem;
}
</style>
</head>

    <div th:fragment="cabecalho" class="logoContainer mb-3 p-3 d-flex justify-content-between">
        <span class="fonteLogo">mudi</span> 
        <span class="mt-3">
            <a class="text-light" sec:authorize="!isAuthenticated()"href="/login">login</a>
            <a class="text-light" sec:authorize="isAuthenticated()" href="/login">logout</a>
        </span>
    </div>

    <div th:fragment="titulo(valor)" class="jumbotron">
            <h1 class="display-4" th:text="${valor}"></h1>
    </div>