STSでローカルホストに接続しようとするとローディング状態が続いてしまう

MacでSTSをダウンロードし、webアプリケーションの開発を開始しようとしたところで躓いています。ブラウザでローカルホストに接続しようとしたところ、「localhostを待機しています...」というメッセージが画面左下に表示されたまま、ローディング状態が続いてしまい困っています。(クロームのタブアイコンもグルグル回ったままになります)

プロジェクトを作成するまでは以下の手順で作業を進めました。

1.「新規」→「スプリングスタータープロジェクトを作成」を選択してプロジェクトを作成
2.依存関係の追加は
WebSocket SpringBootDevTool H2Database SpringDataJPA Thymeleaf の合計5つを選択。
3.初回起動のために
・Maven設定のゴール→packageを設定
・その後プロジェクトを起動
4.controllerとview(hello.html)を作成し、localhost:8080/helloにアクセス

という流れで作業しましたが、ローカルホストへの接続が上手くいかない状況です。

作成したcontrollerとViewのソースは以下の通りです。

MainController.java

package com.example.demo.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class MainController {
	
	@GetMapping("/hello")
    public ModelAndView goHello(ModelAndView mav) {
        mav.setViewName("hello");
		return mav;
    }

}

hello.html

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Hello Page</title>
</head>
<body>
    <h1>Hello</h1>
</body>
</html>

コンソール出力

  .   ____          _            __ _ _
 /\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ / _` | \ \ \ \
 \/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.3.2.RELEASE)

2020-08-16 02:22:46.416  INFO 54694 --- [  restartedMain] com.example.demo.DemoApplication         : Starting DemoApplication on MacBook-Pro-103.local with PID 54694 (/Users/teruhisashibuya/Documents/workspace-spring-tool-suite-4-4.7.1.RELEASE/demo/target/classes started by teruhisashibuya in /Users/teruhisashibuya/Documents/workspace-spring-tool-suite-4-4.7.1.RELEASE/demo)
2020-08-16 02:22:46.417  INFO 54694 --- [  restartedMain] com.example.demo.DemoApplication         : No active profile set, falling back to default profiles: default
2020-08-16 02:22:46.452  INFO 54694 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2020-08-16 02:22:46.453  INFO 54694 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2020-08-16 02:22:46.933  INFO 54694 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFERRED mode.
2020-08-16 02:22:46.953  INFO 54694 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 9ms. Found 0 JPA repository interfaces.
2020-08-16 02:22:47.375  INFO 54694 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2020-08-16 02:22:47.384  INFO 54694 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-08-16 02:22:47.384  INFO 54694 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.37]
2020-08-16 02:22:47.462  INFO 54694 --- [  restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-08-16 02:22:47.462  INFO 54694 --- [  restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1009 ms
2020-08-16 02:22:47.489  INFO 54694 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2020-08-16 02:22:47.591  INFO 54694 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2020-08-16 02:22:47.596  INFO 54694 --- [  restartedMain] o.s.b.a.h2.H2ConsoleAutoConfiguration    : H2 console available at '/h2-console'. Database available at 'jdbc:h2:mem:b17b2c5f-c0d7-46d1-91fc-ed7d49959453'
2020-08-16 02:22:47.708  INFO 54694 --- [  restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2020-08-16 02:22:47.746  INFO 54694 --- [         task-1] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-08-16 02:22:47.768  WARN 54694 --- [  restartedMain] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2020-08-16 02:22:47.784  INFO 54694 --- [         task-1] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 5.4.18.Final
2020-08-16 02:22:47.886  INFO 54694 --- [         task-1] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2020-08-16 02:22:47.962  INFO 54694 --- [         task-1] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
2020-08-16 02:22:48.042  INFO 54694 --- [  restartedMain] o.s.b.d.a.OptionalLiveReloadServer       : LiveReload server is running on port 35729
2020-08-16 02:22:48.093  INFO 54694 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2020-08-16 02:22:48.095  INFO 54694 --- [  restartedMain] DeferredRepositoryInitializationListener : Triggering deferred initialization of Spring Data repositories…
2020-08-16 02:22:48.095  INFO 54694 --- [  restartedMain] DeferredRepositoryInitializationListener : Spring Data repositories initialized!
2020-08-16 02:22:48.104  INFO 54694 --- [  restartedMain] com.example.demo.DemoApplication         : Started DemoApplication in 1.903 seconds (JVM running for 2.543)
2020-08-16 02:22:48.109  INFO 54694 --- [         task-1] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2020-08-16 02:22:48.115  INFO 54694 --- [         task-1] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'

コード

ファイル構成