Não funcionou e não deu erro... | Spring Boot: Agilidade no desenvolvimento java com Spring

Olá! Na aula 2 removemos a requisição ao '/' para uma nova classe controller. Comigo simplesmente não funciona. Sempre tomo o erro abaixo:

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.

Thu Jan 12 16:27:30 BRST 2017
There was an unexpected error (type=Not Found, status=404).
No message available

Meu projeto até o momento está assim:

CONFIGURACAO.CLASS
package br.com.concrete.cantina.conf;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;

@EnableAutoConfiguration
public class Configuracao {

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


HOMECONTROLLER.CLASS
package br.com.concrete.cantina.conf;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class HomeController {

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


POM.XML
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>br.com.concrete.cantina</groupId>
  <artifactId>cantina</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <properties>
        <failOnMissingWebXml>false</failOnMissingWebXml>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

  <dependencies>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <version>1.4.3.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
        <version>1.4.3.RELEASE</version>
    </dependency>

  </dependencies>
</project>



INDEX.HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<link href="bootstrap/css/bootstrap.min.css" rel="stylesheet" />
<title>Home</title>
</head>
<body>
    <div class="container">
        <div class="jumbotron" align="center" style="margin-top: 50px;">
            <h1>Seja bem vindo ao ListaVIPs</h1>
            <div align="center">
                <a href="listavip" class="btn btn-lg btn-primary">Clique aqui para ver a lista de convidados</a>
            </div>
        </div>
    </div>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <script src="bootstrap/js/bootstrap.min.js"></script>
</body>
</html>

http://localhost:8080/

Log de start da aplicação:

SLF4J: The requested version 1.7.16 by your slf4j binding is not compatible with [1.6]
SLF4J: See http://www.slf4j.org/codes.html#version_mismatch for further details.

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.4.3.RELEASE)

2017-01-12 16:34:25.371  INFO 12737 --- [           main] b.c.concrete.cantina.conf.Configuracao   : Starting Configuracao on CSRJL141L with PID 12737 (/home/josuefreitas/Projetos/Java/target/classes started by josuefreitas in /home/josuefreitas/Projetos/Java)
2017-01-12 16:34:25.375  INFO 12737 --- [           main] b.c.concrete.cantina.conf.Configuracao   : No active profile set, falling back to default profiles: default
2017-01-12 16:34:25.758  INFO 12737 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@30ee2816: startup date [Thu Jan 12 16:34:25 BRST 2017]; root of context hierarchy
2017-01-12 16:34:27.489  INFO 12737 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-01-12 16:34:27.509  INFO 12737 --- [           main] o.apache.catalina.core.StandardService   : Starting service Tomcat
2017-01-12 16:34:27.510  INFO 12737 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.6
2017-01-12 16:34:27.671  INFO 12737 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2017-01-12 16:34:27.672  INFO 12737 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1918 ms
2017-01-12 16:34:27.938  INFO 12737 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]
2017-01-12 16:34:27.942  INFO 12737 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-01-12 16:34:27.942  INFO 12737 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-01-12 16:34:27.942  INFO 12737 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-01-12 16:34:27.943  INFO 12737 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2017-01-12 16:34:28.381  INFO 12737 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@30ee2816: startup date [Thu Jan 12 16:34:25 BRST 2017]; root of context hierarchy
2017-01-12 16:34:28.479  INFO 12737 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2017-01-12 16:34:28.480  INFO 12737 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2017-01-12 16:34:28.517  INFO 12737 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-01-12 16:34:28.517  INFO 12737 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-01-12 16:34:28.554  INFO 12737 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-01-12 16:34:29.124  INFO 12737 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2017-01-12 16:34:29.193  INFO 12737 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-01-12 16:34:29.201  INFO 12737 --- [           main] b.c.concrete.cantina.conf.Configuracao   : Started Configuracao in 4.363 seconds (JVM running for 4.711)