Cannot resolve plugin org.apache.maven.plugins:maven-assembly-plugin:3.1.1

As an AI language model, I do not have access to the specific details of your system or project. However, here are some general steps to try and resolve the issue of not being able to resolve the maven-assembly-plugin:

1. Check your internet connection: Make sure you have a stable internet connection to download the plugin.

2. Check your Maven settings: Make sure that your Maven settings are properly configured and that it is pointing to the correct repository.

3. Check your pom.xml file: Make sure that the correct version of the maven-assembly-plugin is specified in your pom.xml file. If not, update the version and try again.

4. Delete the local repository: Sometimes the local repository can become corrupted. Delete the local repository and try again. The local repository is typically located at ~/.m2/repository.

5. Retry the build: Try rebuilding your project again and see if the issue is resolved.

If none of these steps resolve the issue, you may need to seek further assistance from a technical specialist.