Spring Boot WebFlux Not Working Request Controller

I wrote a rest api using webflux and I used liquebase in this project, but when I sent the project calisdirib request at the end, I saw that the controller did not work. I can't find the problem.

What the problem ? When I query using locahost, it doesn't come here (not working request)

Please help me

My Postman Error

    org.springframework.web.server.ResponseStatusException: 404 
NOT_FOUND\r\n\tat org.springframework.web.reactive.
  resource.ResourceWebHandler.lambda$handle$1(R 
  esourceWebHandler.java:378)\r\n\tSuppressed: 
 reactor.core.publisher.FluxOnAssembly$OnAssemblyException: \nError has 
been observed at the following site(s):\n\t|_ checkpoint ⇢ HTTP GET 
\"/api/label\" [ExceptionHandlingWebHandler]\nStack trace:\r\n\t\tat 
 org.springframework.web.reactive.resource.ResourceWebHandler.
 lambda$handle$1(R 
 esourceWebHandler.java:378)\r\n\t\tat 
 reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:44)\r\n\t\tat 
 reactor.core.publisher.Mono.subscribe(Mono.java:4046)\r\n\t\tat 

My Controller

@RestController
@RequestMapping("/api/label")//When I query using locahost, it doesn't come here (not working request)
public class LabelController {

 @Autowired
 LabelService labelService;//this service layer
 @GetMapping
 public Flux<LabelEntity> getAllLabels(){
     return labelService.getAll();
  }
 }

Main Class

 @SpringBootApplication
 @EnableR2dbcRepositories
 @ComponentScan("com.WebFluxTestCodes.WebFluxTestCodes.business.*")
 public class WebFluxTestCodesApplication {

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

 }

pom.xml

 <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.4.3</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.WebFluxTestCodes</groupId>
<artifactId>WebFluxTestCodes</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>WebFluxTestCodes</name>
<description>Demo project for Spring Boot</description>
<properties>
    <java.version>11</java.version>
</properties>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-r2dbc</artifactId>//r2dbc reactive dependency 
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jdbc</artifactId>//jdbc 
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-webflux</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.liquibase</groupId>
        <artifactId>liquibase-core</artifactId>//liquibase database version control
        <version>3.10.3</version>
    </dependency>
    <dependency>
        <groupId>io.r2dbc</groupId>
        <artifactId>r2dbc-postgresql</artifactId>//postgre database
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.liquibase</groupId>
        <artifactId>liquibase-maven-plugin</artifactId>
        <version>4.3.1</version>
    </dependency>
    <dependency>
        <groupId>io.r2dbc</groupId>
        <artifactId>r2dbc-pool</artifactId>
        <version>0.9.0.M1</version>
    </dependency>
    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>//lombok library anotation getter setter and other
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>io.projectreactor</groupId>
        <artifactId>reactor-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>javax.persistence</groupId>
        <artifactId>javax.persistence-api</artifactId>
        <version>2.2</version>
    </dependency>
</dependencies>
<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
</build>