Issue while accessing process Tab

...appiancorp.kougar.mapper.Mapper.request(Mapper.java:93)
at com.appiancorp.kougar.services.KougarServiceInvocationHandler$KInvocationHandler.invoke(KougarServiceInvocationHandler.java:178)
at com.appiancorp.kougar.services.KougarServiceInvocationHandler$KougarMethodInvocation.proceed(KougarServiceInvocationHandler.java:270)
at com.appiancorp.security.authz.AuthorizationMethodInterceptor.invoke(AuthorizationMethodInterceptor.java:54)
at com.appiancorp.kougar.services.KougarServiceInvocationHandler.invoke(KougarServiceInvocationHandler.java:307)
at com.sun.proxy.$Proxy327.downloadDocuments(Unknown Source)
at com.appiancorp.process.analytics2.service.CachingProcessReportFacade.getReportsFromCacheOrDisk(CachingProcessReportFacade.java:332)
at com.appiancorp.process.analytics2.service.CachingProcessReportFacade.getLocalizedReportsFromCacheOrDisk(CachingProcessReportFacade.java:283)
at com.appiancorp.process.a...

...nalytics2.service.CachingProcessReportFacade.fetchReport(CachingProcessReportFacade.java:273)
at com.appiancorp.process.analytics2.service.ProcessAnalyticsServiceFacade.getProcessReport(ProcessAnalyticsServiceFacade.java:3377)
at sun.reflect.GeneratedMethodAccessor2804.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.appiancorp.util.MethodInvocationReflectionImpl.proceed(MethodInvocationReflectionImpl.java:23)
at com.appiancorp.security.authz.AuthorizationMethodInterceptor.invoke(AuthorizationMethodInterceptor.java:54)
at com.appiancorp.services.ServiceManager$ServiceInvocationHandler.invoke(ServiceManager.java:635)
at com.sun.proxy.$Proxy134.getProcessReport(Unknown Source)
at com.appiancorp.process.analytics2.display.ReportCache.getReport(ReportCache.java:69)
at com...

... .appiancorp.process.analytics2.display.ReportCache.createReportInstance(ReportCache.java:113)
at com.appiancorp.process.runtime.taglib.ProcessReportTag.doEndTag(ProcessReportTag.java:159)
at jsp_servlet._analytics.__base_report._jsp__tag23(__base_report.java:1182)
at jsp_servlet._analytics.__base_report._jsp__tag22(__base_report.java:1135)
at jsp_servlet._analytics.__base_report._jspService(__base_report.java:300)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:35)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)

Try running load.sh to load the default reports and views.
forum.appian.com/.../Loading_Default_Reports_and_Views.html

and if every tab is giving the same issue, perform the below steps

1) Navigate to <APPIAN_HOME>\\ear\\suite.ear\\web.war\\WEB-INF\\bundled-apps
2) Copy and Paste the system.zip to a directory on your Desktop
3) Navigate to Appian Designer interface as a System Administrator
4) Import the System.zip and ensure that all items are imported correctly.
5) Once the import is complete, delete the system.zip from the Applications Tab.

@tushar try restarting the server, that may resolve this

@abhinavg712 I am from Tushar team we are on Appian 7.10 we tried to import the zip but we still see the same error.

We see the following error while executing the load.sh
/pkgs/appian7.10/_admin/_scripts> ./load.sh
log4j:WARN No appenders could be found for logger (com.appiancorp.ap2.ConfigureLog4j).
log4j:WARN Please initialize the log4j system properly.
Initializing default cache.
Waiting for servers to be up...
Exception in thread "main" java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.appiancorp.suite.cfg.ConfigurationFactory.createConfiguration(ConfigurationFactory.java:57)
at com.appiancorp.suite.cfg.ConfigurationFactory.getConfiguration(ConfigurationFactory.java:30)
at com.appiancorp.naming.ServiceConnections.<init>(ServiceConnections.java:65)
at com.appiancorp.naming.ServiceConnections.<init>(ServiceConnections.java:52)
at com.appiancorp.suiteapi.common.ServiceLocator.<clinit>(ServiceLocator.java:223)
at com.appiancorp.tools.WaitForServers.await(WaitForServers.java:18)
at com.appiancorp.common.initialize.InitializeServer.main(InitializeServer.java:19)
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContextListener
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 19 more

@abhilashe: Try running the same load.sh on the engine servers where the engines are running and then try to do a complete bounce of the application and engine server.