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    org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.)
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    org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.

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    Root Cause Analysis

    1. org.apache.commons.logging.LogConfigurationException

      Invalid class loader hierarchy. \ You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.

      at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor()
    2. Apache Commons Logging
      LogFactory.getLog
      1. org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:385)
      2. org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
      3. org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
      4. org.apache.commons.logging.LogFactory.getLog(LogFactory.java:370)
      4 frames
    3. ch.qos.test
      ChildFirstTestJCL0.main
      1. ch.qos.test.ChildFirstTestJCL0.main(ChildFirstTestJCL0.java:43)
      1 frame