Please suggest how to resolve below errors - Very urgent
Error Details
Stack Trace com.vignette.as.client.exception.ApplicationException: 02/21/2016 11:18:59:584, Error 4 (Fatal Error), Message 026-200-0006: "A valid asset is required, the supplied asset is null."
at com.vignette.as.client.exception.ApplicationException.getOne(ApplicationException.java:270)
at com.vignette.as.ui.common.property.PropertyPageAction.doPerform(PropertyPageAction.java:325)
at com.vignette.as.ui.common.action.VgnAction.perform(VgnAction.java:126)
at org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1787)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1586)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1072)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:348)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6981)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3892)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2766)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
Nested exception is:
com.vignette.as.ui.common.property.PPFException: 02/21/2016 11:18:59:584, Error 4 (Fatal Error), Message 026-200-0006: "A valid asset is required, the supplied asset is null."
at com.vignette.as.ui.common.property.PPFException.getOne(PPFException.java:44)
at com.vignette.as.ui.console.PropertyPageAdaptor.generatePropertiesPageDescriptor(PropertyPageAdaptor.java:72)
at com.vignette.as.ui.console.ConsolePropertyPageAction.getPropertyPageXML(ConsolePropertyPageAction.java:234)
at com.vignette.as.ui.console.ConsolePropertyPageAction.getConfigurationResource(ConsolePropertyPageAction.java:198)
at com.vignette.as.ui.common.property.PropertyPageAction.loadConfigurationResource(PropertyPageAction.java:490)
at com.vignette.as.ui.common.property.PropertyPageAction.doPerform(PropertyPageAction.java:254)
at com.vignette.as.ui.common.action.VgnAction.perform(VgnAction.java:126)
at org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1787)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1586)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1072)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:348)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6981)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3892)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2766)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
Session ID: WJ2KSv8J2ps1sYVnT1tJnqFQdLYWq5NQyfS9QZm6jGK9N3WN17tY!1422404402!NONE!1456060106941 (from cookie)
Headers Connection: Keep-Alive
Host: 172.22.10.18:27110
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko
Accept-Encoding: gzip, deflate
Cookie: JSESSIONID=WJ2KSv8J2ps1sYVnT1tJnqFQdLYWq5NQyfS9QZm6jGK9N3WN17tY!1422404402!NONE
Accept-Language: en-IN
VgnSessionKey=5ce1b20c53403510VgnVCM100000120a16acSESN&context=%2Fcoe&path=%2Fsecure%2FnewInstanceSelection.do
Accept: text/html, application/xhtml+xml, */*
Cookies JSESSIONID = WJ2KSv8J2ps1sYVnT1tJnqFQdLYWq5NQyfS9QZm6jGK9N3WN17tY!1422404402!NONE