java.lang.NoClassDefFoundError: org/apache/log4j/Layout

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    java.lang.NoClassDefFoundError: org/apache/log4j/Layout
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    java.lang.NoClassDefFoundError: org/apache/log4j/Layout
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    java.lang.NoClassDefFoundError: org/apache/log4j/Layout
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    java.lang.NoClassDefFoundError: org/apache/log4j/Layout

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Root Cause Analysis

  1. java.lang.NoClassDefFoundError

    org/apache/log4j/Layout

    at org.apache.commons.logging.impl.Log4jFactory.getInstance()
  2. Apache Commons Logging
    LogFactory.getLog
    1. org.apache.commons.logging.impl.Log4jFactory.getInstance(Log4jFactory.java:140)
    2. org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:257)
    3. org.apache.commons.logging.LogFactory.getLog(LogFactory.java:390)
    3 frames
  3. net.sf.navigator
    UseMenuDisplayerTag.<init>
    1. net.sf.navigator.taglib.UseMenuDisplayerTag.<init>(UseMenuDisplayerTag.java:38)
    1 frame
  4. Java RT
    Class.forName
    1. java.lang.Class.forName0(Native Method)
    2. java.lang.Class.forName(Class.java:140)
    2 frames