IBM Security Guardium (Guardium) - "NoClassDefFoundError" while performing a cleanup of archive/backup files on CENTERA

Problem

I am trying to use the CLI command [] support clean centera_files [] to delete archives/backups stored on Centera, but getting the following error: [] Exception in thread "main" java.lang.NoClassDefFoundError: org.apache.log4j.Logger at com.guardium.utils.i18n.AbstractThought. (AbstractThought.java:30) at java.lang.J9VMInternals.initializeImpl(Native Method) at java.lang.J9VMInternals.initialize(J9VMInternals.java:235) at java.lang.J9VMInternals.initialize(J9VMInternals.java:202) at com.guardium.utils.Utils.(Utils.java:82) at java.lang.J9VMInternals.initializeImpl(Native Method) at java.lang.J9VMInternals.initialize(J9VMInternals.java:235) at com.guardium.externalarchiving.CenteraUtils.queryFiles (CenteraUtils.java:212) at com.guardium.externalarchiving.CenteraQuery.main (CenteraQuery.java:66) Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Logger at java.net.URLClassLoader.findClass(URLClassLoader.java:600) at java.lang.ClassLoader.loadClassHelper(ClassLoader.java:777) at java.lang.ClassLoader.loadClass(ClassLoader.java:750) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:326) at java.lang.ClassLoader.loadClass(ClassLoader.java:731) ... 9 more No files were deleted.[]