type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Error allocating a servlet instance
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574)
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527)
java.lang.Thread.run(Unknown Source)
root cause
java.lang.NoClassDefFoundError: org/apache/commons/modeler/Registry
org.apache.catalina.manager.ManagerServlet.setWrapper(ManagerServlet.java:285)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:574)
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1527)
java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.20 logs.
