java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at org.revisions.client.remote.ServiceFactory.getSessionService(ServiceFactory.java:87)
at org.revisions.client.remote.ArchiveConnector.createConnection(ArchiveConnector.java:45)
at org.revisions.client.remote.ArchiveConnector.getConnection(ArchiveConnector.java:26)
at org.revisions.client.command.GetArchiveStatsAndMessages.execute(GetArchiveStatsAndMessages.java:18)
at org.revisions.client.gui.main.DashboardPanel.buildMessagePanel(DashboardPanel.java:93)
at org.revisions.client.gui.main.DashboardPanel.initGui(DashboardPanel.java:62)
at org.revisions.client.gui.main.DashboardPanel.(DashboardPanel.java:36)
at org.revisions.client.gui.main.MainTabContainer.populateTabPanels(MainTabContainer.java:80)
at org.revisions.client.gui.main.MainTabContainer.(MainTabContainer.java:39)
at org.revisions.client.gui.main.RevisionsGuiClient.(RevisionsGuiClient.java:52)
at org.revisions.client.gui.main.RevisionsGuiClient.launchClient(RevisionsGuiClient.java:100)
at org.revisions.client.gui.main.RevisionsGuiClient.main(RevisionsGuiClient.java:132)

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