OpenApi - required a bean of type 'org.springdoc.webmvc.ui.SwaggerIndexTransformer' that could not be found - spring-webflux

Question

I'm adding Swagger to my Spring Webflux service with functional controller. First I was getting this error:
Description:
The bean 'swaggerWelcome', defined in class path resource
[org/springdoc/webflux/ui/SwaggerConfig.class], could not be
registered. A bean with that name has already been defined in class
path resource [org/springdoc/webmvc/ui/SwaggerConfig.class] and
overriding is disabled.
Action:
Consider renaming one of the beans or enabling overriding by setting
spring.main.allow-bean-definition-overriding=true
So I added spring.main.allow-bean-definition-overriding=true to my application.properties file.
And now I'm getting this error:
Description:
Parameter 1 of method swaggerWebMvcConfigurer in
org.springdoc.webmvc.ui.SwaggerConfig required a bean of type
'org.springdoc.webmvc.ui.SwaggerIndexTransformer' that could not be
found.
Action:
Consider defining a bean of type
'org.springdoc.webmvc.ui.SwaggerIndexTransformer' in your
configuration.
Pom file:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.company/groupId>
<artifactId>service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!-- For all mvc and web functions -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<!-- Default persistence functions -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-r2dbc</artifactId>
</dependency>
<dependency>
<groupId>dev.miku</groupId>
<artifactId>r2dbc-mysql</artifactId>
<version>0.8.2.RELEASE</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springdoc</groupId>
<artifactId>springdoc-openapi-ui</artifactId>
<version>1.5.9</version>
</dependency>
<dependency>
<groupId>org.springdoc</groupId>
<artifactId>springdoc-openapi-webflux-ui</artifactId>
<version>1.5.9</version>
</dependency>
</dependencies>
</project>
The application.properties file contains:
spring.main.allow-bean-definition-overriding=true
Is there a way to avoid this configuration? What is purpose the of the SwaggerIndexTransformer? Because in the website https://springdoc.org/#getting-started they say that "No additional configuration is needed".

Answer 1

The error was that in the pom file the only dependency should be springdoc-openapi-webflux-ui