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

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java.lang.NullPointerException:
at com.atlassian.core.ofbiz.util.OFBizPropertyUtils.getPropertySet(OFBizPropertyUtils.java:23)
at com.atlassian.jira.issue.managers.DefaultAttachmentManager.getAttachment(DefaultAttachmentManager.java:63)
at com.atlassian.jira.web.servlet.ViewAttachmentServlet.getAttachment(ViewAttachmentServlet.java:46)
at com.atlassian.jira.web.servlet.ViewAttachmentServlet.getFileName(ViewAttachmentServlet.java:29)
at com.atlassian.jira.web.servlet.AbstractViewFileServlet.doGet(AbstractViewFileServlet.java:33)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:333)
at com.evermind._ha.doFilter(.:59)

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