access-denied eclipse java maven

Maven Shading Error: Access is Denied

Now, I have already seen this question, however it doesn’t appear anything is using my target folder.

What’s going on, is when I compile it fails and shows me this error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:2.3:shade (default) on project FooProject: Error creating shaded jar: Failed to analyze class dependencies: C:\Users\paul_000\Documents\FooCore\target\classes (Access is denied) -> [Help 1]

I’m not quite sure exactly why this happens, as it doesn’t happen on my normal computer.

EDIT: I forgot to mention, the jar I am shading does not exist on a repository. I just compile it locally (clean install).
As well, here’s what I use to shade: