I am getting this error, although I've already put necessary jar files for Tiles:
SEVERE: Exception while loading the app
SEVERE: Undeployment failed for context /FinalTilesStruts2
SEVERE: Exception while loading the app :
java.lang.IllegalStateException: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException:
java.lang.IllegalArgumentException:
java.lang.NoClassDefFoundError: org/apache/tiles/listener/TilesListener