For artifact {org.springframework.boot:spring-boot-starter-actuator:null:jar}: The version cannot be empty.

Hello, it seems like you're facing an issue with the artifact `{org.springframework.boot:spring-boot-starter-actuator:null:jar}`. The error message indicates that the version of this artifact cannot be empty.

To resolve this issue, you need to provide a valid version for the `spring-boot-starter-actuator` dependency. Make sure that you specify the correct version number in your project's build file or dependency management configuration.

For example, if you're using Maven, you can add the following dependency to your `pom.xml` file:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
    <version><!-- Add the desired version here --></version>
</dependency>

Replace `<!-- Add the desired version here -->` with the actual version number you want to use, such as `2.5.2`.

If you're using a different build tool or dependency management system, the steps may vary slightly. Let me know if you need further assistance or if you have any more questions!