Maven error: Failure to transfer classworlds: pom: 1.1-alpha-2 from, mavenclassworlds

Maven error: Failure to transfer classworlds: pom: 1.1-alpha-2 from, mavenclassworlds

Detailed error:
Failure to transfer classworlds: pom: 1.1-alpha-2 from http: // localhost: 8081/nexus/content/groups/public was cached in the local repository, resolution will not be reattempted until the update interval of nexus has elapsed or updates are forced. original error: cocould not transfer artifact classworlds: pom: 1.1-alpha-2 from/to nexus (http: // localhost: 8081/nexus/content/groups/public ): connection refused: no further information to http: // localhost: 8081/nexus/content/groups/public/classworlds/1.1-alpha-2/classworlds-1.1-alpha-2.pom pom. xml/personalSpace line 1 Maven Configuration Problem

Explanation:
The plug-in classworlds-1.1-alpha-2.pom is not found in the cached local repository and will not be downloaded from the central repository of the Nexus agent until the problem is resolved.
Go to the local repository to view/classworlds/1.1-alpha-2/directory information:

What should I do if there is no required file in this directory?
Solution:
Delete the/classworlds directory and execute POM update.

Solve the problem!