APM - WebView Error 'java.lang.NullPointerException'

Products

• CA Application Performance Management (APM / Wily / Introscope)

Issue/Introduction

WebView log is filled with the following ERROR logs:
 [ERROR] [WebView] Identifier: 1001.1658979680 - receiveMessage() failed for : com.ca.apm.introscope.workstation.webapp.server.models.DashboardModel:                                                        :3002
java.lang.NullPointerException
        at com.ca.apm.introscope.workstation.webapp.server.utilities.mm.TrackingManager.getUpdates(TrackingManager.java:79)
        at com.ca.apm.introscope.workstation.webapp.server.models.DashboardModel.receiveMessage(DashboardModel.java:51)
        at com.ca.apm.introscope.workstation.webapp.server.models.ModelManager$ModelRequestThread$1.run(ModelManager.java:410)
        at java.lang.Thread.run(Thread.java:750)
[ERROR] [WebView] Identifier: 1002.1658979680 - receiveMessage() failed for : com.ca.apm.introscope.workstation.webapp.server.models.ManagementModul                                                        esTreeModel::2106
java.lang.NullPointerException
        at com.ca.apm.introscope.workstation.webapp.server.utilities.mm.TrackingManager.getUpdates(TrackingManager.java:79)
        at com.ca.apm.introscope.workstation.webapp.server.models.ManagementModulesTreeModel.receiveMessage(ManagementModulesTreeModel.java:171)
        at com.ca.apm.introscope.workstation.webapp.server.models.ModelManager$ModelRequestThread$1.run(ModelManager.java:410)
        at java.lang.Thread.run(Thread.java:750)
[ERROR] [WebView] Identifier: 1003.1658979695 - receiveMessage() failed for : com.ca.apm.introscope.workstation.webapp.server.models.DashboardModel:                                                        :3002
java.lang.NullPointerException
        at com.ca.apm.introscope.workstation.webapp.server.utilities.mm.TrackingManager.getUpdates(TrackingManager.java:79)
        at com.ca.apm.introscope.workstation.webapp.server.models.DashboardModel.receiveMessage(DashboardModel.java:51)
        at com.ca.apm.introscope.workstation.webapp.server.models.ModelManager$ModelRequestThread$1.run(ModelManager.java:410)
        at java.lang.Thread.run(Thread.java:750)
[ERROR] [WebView] Identifier: 1004.1658979695 - receiveMessage() failed for : com.ca.apm.introscope.workstation.webapp.server.models.ManagementModul                                                        esTreeModel::2106
java.lang.NullPointerException
        at com.ca.apm.introscope.workstation.webapp.server.utilities.mm.TrackingManager.getUpdates(TrackingManager.java:79)
        at com.ca.apm.introscope.workstation.webapp.server.models.ManagementModulesTreeModel.receiveMessage(ManagementModulesTreeModel.java:171)
        at com.ca.apm.introscope.workstation.webapp.server.models.ModelManager$ModelRequestThread$1.run(ModelManager.java:410)
        at java.lang.Thread.run(Thread.java:750)
[ERROR] [WebView] Identifier: 1005.1658979710 - receiveMessage() failed for : com.ca.apm.introscope.workstation.webapp.server.models.ManagementModul                                                        esTreeModel::2106
java.lang.NullPointerException
        at com.ca.apm.introscope.workstation.webapp.server.utilities.mm.TrackingManager.getUpdates(TrackingManager.java:79)
        at com.ca.apm.introscope.workstation.webapp.server.models.ManagementModulesTreeModel.receiveMessage(ManagementModulesTreeModel.java:171)
        at com.ca.apm.introscope.workstation.webapp.server.models.ModelManager$ModelRequestThread$1.run(ModelManager.java:410)
        at java.lang.Thread.run(Thread.java:750)
[ERROR] [WebView] Identifier: 1006.1658979710 - receiveMessage() failed for : com.ca.apm.introscope.workstation.webapp.server.models.DashboardModel:                                                        :3002
java.lang.NullPointerException
        at com.ca.apm.introscope.workstation.webapp.server.utilities.mm.TrackingManager.getUpdates(TrackingManager.java:79)
        at com.ca.apm.introscope.workstation.webapp.server.models.DashboardModel.receiveMessage(DashboardModel.java:51)
        at com.ca.apm.introscope.workstation.webapp.server.models.ModelManager$ModelRequestThread$1.run(ModelManager.java:410)
        at java.lang.Thread.run(Thread.java:750)
[ERROR] [WebView] Identifier: 1007.1658979725 - receiveMessage() failed for : com.ca.apm.introscope.workstation.webapp.server.models.ManagementModul                                                        esTreeModel::2106
java.lang.NullPointerException
        at com.ca.apm.introscope.workstation.webapp.server.utilities.mm.TrackingManager.getUpdates(TrackingManager.java:79)
        at com.ca.apm.introscope.workstation.webapp.server.models.ManagementModulesTreeModel.receiveMessage(ManagementModulesTreeModel.java:171)
        at com.ca.apm.introscope.workstation.webapp.server.models.ModelManager$ModelRequestThread$1.run(ModelManager.java:410)
        at java.lang.Thread.run(Thread.java:750)

Environment

Release : 10.7.0

Component :

Cause

Webview Caching 

Resolution

Try clearing Introscope OSGI cache

https://knowledge.broadcom.com/external/article?articleId=100299#/