bean creation error when starting spring boot application

You need to change spring boot version to Released version

from

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.4.0</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

to

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.3.3.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>

I had a same issue, and it is happening because of Spring Cloud services and Spring Boot version issues. I got rid of it by using https://start.spring.io/ to generate my project.

When you select all dependencies needed for your project, you can then click the Explore button and check the pom.xml file.

This issue happened to me when I tried to add dependency for Eureka-client to my pom.xml after generating project, so using IntelliJ.

I got the same error.

Then I went to Spring.io again select dependencies that I use for my project and also dependency for Eureka-client, clicked on Explore button and saw that I need to add this line of code under java version in pom.xml

<spring-cloud.version>2020.0.3</spring-cloud.version>

But also this lines as well:

<dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <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>
    </build>

So I just copy pasted it to my existing pom.xml and it worked!

To elaborate on @M-deinum's comment, setting Spring Boot version to 2.3.4.RELEASE (instead of 2.4.2 in my case) solved the issue. In gradle this meant changing:

plugins {
    id 'org.springframework.boot' version '2.4.2'
    ...
}

To

plugins {
    id 'org.springframework.boot' version '2.3.4.RELEASE'
    ...
}