I am getting this error during my Maven build.
Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:2.4.3:shade (default) on project dl4j-examples: Err
I also faced same issue, Ben is correct, it's the case of corrupt jar file. Just go to .m2 repo folder and delete it from there and again build it (mvn clean install). It would resolve the issue.