Could not find artifact org.springframework:spring-core:pom:5.0.8 in central (https://repo.maven.apache.org/maven2)

This error message indicates that Maven was unable to find the Spring Core artifact in the central Maven repository. This can occur for a variety of reasons, such as:

- The artifact has been removed or relocated from the repository.
- There was a temporary network issue preventing Maven from accessing the repository.
- Maven is using an incorrect version of the repository URL.

To resolve this issue, you can try the following steps:

1. Check if the artifact exists in a different repository, such as the Spring repository or a third-party repository. You can add the repository to your Maven settings.xml file or your project's pom.xml file.

2. Verify that you have the correct version of the artifact in your project's dependencies. If you are using an incorrect version, Maven will not be able to find the artifact in the repository.

3. Ensure that your Maven settings.xml file or your project's pom.xml file is configured correctly to access the central repository. You can try running the "mvn clean install -U" command to force Maven to update its local repository cache and download any missing artifacts.

If none of these steps resolve the issue, you may need to contact the Spring team or Maven support for further assistance.