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HTTP Status 500 - Error instantiating servlet class com.caucho.quercus.servlet.QuercusServlet

type Exception report

message Error instantiating servlet class com.caucho.quercus.servlet.QuercusServlet

description The server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Error instantiating servlet class com.caucho.quercus.servlet.QuercusServletorg.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)java.lang.Thread.run(Thread.java:662)

root cause

java.lang.ClassNotFoundException: com.caucho.quercus.servlet.QuercusServletorg.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)java.lang.Thread.run(Thread.java:662)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.54 logs.

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