title: Tomcat 7.0.42 Error listenerStart
body: <p>Am deploying my war file on tomcat(jdk 7) and am seeing following error. Am not sure of whats causing the issue.</p>
  
  <pre><code>INFO: OpenSSL successfully initialized (OpenSSL 1.0.1d 5 Feb 2013)
  Feb 27, 2014 11:02:50 AM org.apache.coyote.AbstractProtocol init
  INFO: Initializing ProtocolHandler ["http-apr-8081"]
  Feb 27, 2014 11:02:50 AM org.apache.coyote.AbstractProtocol init
  INFO: Initializing ProtocolHandler ["ajp-apr-8009"]
  Feb 27, 2014 11:02:50 AM org.apache.catalina.startup.Catalina load
  INFO: Initialization processed in 1588 ms
  Feb 27, 2014 11:02:50 AM org.apache.catalina.core.StandardService startInternal
  INFO: Starting service Catalina
  Feb 27, 2014 11:02:50 AM org.apache.catalina.core.StandardEngine startInternal
  INFO: Starting Servlet Engine: Apache Tomcat/7.0.42
  Feb 27, 2014 11:02:50 AM org.apache.catalina.startup.HostConfig deployWAR
  INFO: Deploying web application archive D:\Dev\tools\apache-tomcat-7.0.42\webapp
  s\CollaborationPortal.war
  Feb 27, 2014 11:03:09 AM org.apache.catalina.startup.TaglibUriRule body
  INFO: TLD skipped. URI: http://java.sun.com/jsp/jstl/core is already defined
  Feb 27, 2014 11:03:09 AM org.apache.catalina.startup.TaglibUriRule body
  INFO: TLD skipped. URI: http://java.sun.com/jsp/jstl/fmt is already defined
  Feb 27, 2014 11:03:09 AM org.apache.catalina.core.StandardContext startInternal
  SEVERE: Error listenerStart
  Feb 27, 2014 11:03:09 AM org.apache.catalina.core.StandardContext startInternal
  SEVERE: Context [/CollaborationPortal] startup failed due to previous errors
  Feb 27, 2014 11:03:09 AM org.apache.coyote.AbstractProtocol start
  INFO: Starting ProtocolHandler ["http-apr-8081"]
  Feb 27, 2014 11:03:09 AM org.apache.coyote.AbstractProtocol start
  INFO: Starting ProtocolHandler ["ajp-apr-8009"]
  Feb 27, 2014 11:03:09 AM org.apache.catalina.startup.Catalina start
  INFO: Server startup in 18890 ms
  </code></pre>