Failure to transfer org.apache.maven.plugins:maven-jar-plugin:jar:2.3.1 from http://uk.maven.org/maven2 was cached in the local?

?repository, resolution will not be reattempted until the update interval of UK has elapsed or updates are forced. Original error:?

?Could not transfer artifact org.apache.maven.plugins:maven-jar-plugin:jar:2.3.1 from/to UK (http://uk.maven.org/maven2): invalid?

?version format: 143DD9974C46286FDC7C6ED4B34FA0658372F56416122ABA75907F43A7C04BB3