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

exception
java.lang.RuntimeException: javax.servlet.ServletException: Filter execution threw an exception
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:61)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:56)
	org.camunda.bpm.webapp.impl.security.SecurityActions.runWithAuthentications(SecurityActions.java:38)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:56)


root cause
javax.servlet.ServletException: Filter execution threw an exception
	org.camunda.bpm.webapp.impl.security.filter.SecurityFilter.doFilterSecure(SecurityFilter.java:67)
	org.camunda.bpm.webapp.impl.security.filter.SecurityFilter.doFilter(SecurityFilter.java:51)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:59)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:56)
	org.camunda.bpm.webapp.impl.security.SecurityActions.runWithAuthentications(SecurityActions.java:38)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:56)


root cause
java.lang.NoClassDefFoundError: org/camunda/bpm/cockpit/plugin/spi/impl/AbstractCockpitPlugin
	java.lang.ClassLoader.defineClass1(Native Method)
	java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	java.security.AccessController.doPrivileged(Native Method)
	java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	java.lang.Class.forName0(Native Method)
	java.lang.Class.forName(Class.java:348)
	org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1299)
	org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1164)
	java.lang.Class.forName0(Native Method)
	java.lang.Class.forName(Class.java:348)
	java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:370)
	java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
	java.util.ServiceLoader$1.next(ServiceLoader.java:480)
	org.camunda.bpm.webapp.plugin.impl.DefaultAppPluginRegistry.loadPlugins(DefaultAppPluginRegistry.java:52)
	org.camunda.bpm.webapp.plugin.impl.DefaultAppPluginRegistry.getPlugins(DefaultAppPluginRegistry.java:62)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.getPlugins(ProcessEnginesFilter.java:288)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.createPluginPackagesStr(ProcessEnginesFilter.java:248)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.replacePlaceholder(ProcessEnginesFilter.java:241)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.serveIndexPage(ProcessEnginesFilter.java:232)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.serveIndexPage(ProcessEnginesFilter.java:160)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.applyFilter(ProcessEnginesFilter.java:110)
	org.camunda.bpm.webapp.impl.filter.AbstractTemplateFilter.doFilter(AbstractTemplateFilter.java:42)
	org.camunda.bpm.webapp.impl.security.filter.SecurityFilter.doFilterSecure(SecurityFilter.java:67)
	org.camunda.bpm.webapp.impl.security.filter.SecurityFilter.doFilter(SecurityFilter.java:51)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:59)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:56)
	org.camunda.bpm.webapp.impl.security.SecurityActions.runWithAuthentications(SecurityActions.java:38)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:56)


root cause
java.lang.ClassNotFoundException: org.camunda.bpm.cockpit.plugin.spi.impl.AbstractCockpitPlugin
	java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	java.lang.ClassLoader.defineClass1(Native Method)
	java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	java.security.AccessController.doPrivileged(Native Method)
	java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	java.lang.Class.forName0(Native Method)
	java.lang.Class.forName(Class.java:348)
	org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1299)
	org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1164)
	java.lang.Class.forName0(Native Method)
	java.lang.Class.forName(Class.java:348)
	java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:370)
	java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
	java.util.ServiceLoader$1.next(ServiceLoader.java:480)
	org.camunda.bpm.webapp.plugin.impl.DefaultAppPluginRegistry.loadPlugins(DefaultAppPluginRegistry.java:52)
	org.camunda.bpm.webapp.plugin.impl.DefaultAppPluginRegistry.getPlugins(DefaultAppPluginRegistry.java:62)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.getPlugins(ProcessEnginesFilter.java:288)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.createPluginPackagesStr(ProcessEnginesFilter.java:248)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.replacePlaceholder(ProcessEnginesFilter.java:241)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.serveIndexPage(ProcessEnginesFilter.java:232)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.serveIndexPage(ProcessEnginesFilter.java:160)
	org.camunda.bpm.webapp.impl.engine.ProcessEnginesFilter.applyFilter(ProcessEnginesFilter.java:110)
	org.camunda.bpm.webapp.impl.filter.AbstractTemplateFilter.doFilter(AbstractTemplateFilter.java:42)
	org.camunda.bpm.webapp.impl.security.filter.SecurityFilter.doFilterSecure(SecurityFilter.java:67)
	org.camunda.bpm.webapp.impl.security.filter.SecurityFilter.doFilter(SecurityFilter.java:51)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:59)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:56)
	org.camunda.bpm.webapp.impl.security.SecurityActions.runWithAuthentications(SecurityActions.java:38)
	org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:56)


note The full stack trace of the root cause is available in the Apache Tomcat/8.0.24 logs.