java.lang.NoClassDefFoundError

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  • Log4J error: org/apache/log4j/Layout
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    • java.lang.NoClassDefFoundError: org/apache/log4j/Layout at org.apache.commons.logging.impl.Log4jFactory.getInstance(Log4jFactory.java:140) at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:257) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:390) at net.sf.navigator.taglib.UseMenuDisplayerTag.<init>(UseMenuDisplayerTag.java:38) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:140)

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