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java.lang.NullPointerException at com.opensymphony.user.Group.<init>(Group.java:38) at com.opensymphony.user.UserManager$Type$2.create(UserManager.java:56) at com.opensymphony.user.UserManager$Type$2.create(UserManager.java:54) at com.opensymphony.user.UserManager.buildEntity(UserManager.java:295) at com.opensymphony.user.UserManager.createEntity(UserManager.java:318) at com.opensymphony.user.UserManager.createGroup(UserManager.java:196) at com.atlassian.core.user.GroupUtils.getGroupSafely(GroupUtils.java:102) at com.atlassian.jira.web.action.admin.user.GroupBrowser.doExecute(GroupBrowser.java:78) at webwork.action.ActionSupport.execute(ActionSupport.java:153) at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:59) at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:141) at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:181) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)