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Stefaan Dutry commented on WW-4851: ----------------------------------- [~lukaszlenart] Is it just a warning or does it no longer start? i've had a similar problem with the jetty plugin in the struts2-bootsrap-showcase app. fixed it over there by setting asm and asm-commons as dependencies of the jetty server. There is still a log4j2 warning that remains, but that was already the case with lower versions of log4j2. see: [struts2-bootstrap-showcase pom.xml|https://github.com/struts-community-plugins/struts2-bootstrap/blob/master/struts2-bootstrap-showcase/pom.xml] {code:xml} <plugins> <plugin> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-maven-plugin</artifactId> <version>${jetty-maven-plugin.version}</version> ... <dependencies> <dependency> <groupId>org.ow2.asm</groupId> <artifactId>asm</artifactId> <version>${asm.version}</version> </dependency> <dependency> <groupId>org.ow2.asm</groupId> <artifactId>asm-commons</artifactId> <version>${asm.version}</version> </dependency> </dependencies> </plugin> </plugins> {code} > Upgrade to Log4j2 2.9.0 > ----------------------- > > Key: WW-4851 > URL: https://issues.apache.org/jira/browse/WW-4851 > Project: Struts 2 > Issue Type: Dependency > Reporter: Stefaan Dutry > Priority: Trivial > Fix For: 2.5.14 > > > version {{2.9.0}} was released on {{2017-08-26}} > [changelog|https://logging.apache.org/log4j/2.0/changes-report.html#a2.9.0] -- This message was sent by Atlassian JIRA (v6.4.14#64029)