[ https://issues.jboss.org/browse/WFLY-9220?page=com.atlassian.jira.plugin.... ] Stoyan Petrov commented on WFLY-9220: ------------------------------------- Agree, commons-lang3 is not backward compatible with commons-lang2 but it seems a lot of new libraries use new one, package is different: org.apache.commons.lang3 Example of "common" error: java.lang.ClassNotFoundException: org.apache.commons.lang3.StringUtils It seems only definition of both libs solve the problem. But if there is not such core lib in WFLY then this is not mandatory. -- This message was sent by Atlassian JIRA (v7.2.3#72005)