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

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at com.atlassian.core.ofbiz.util.OFBizPropertyUtils.getPropertySet(
at com.atlassian.jira.issue.managers.DefaultAttachmentManager.getAttachment(
at com.atlassian.jira.web.servlet.ViewAttachmentServlet.getAttachment(
at com.atlassian.jira.web.servlet.ViewAttachmentServlet.getFileName(
at com.atlassian.jira.web.servlet.AbstractViewFileServlet.doGet(
at javax.servlet.http.HttpServlet.service(
at javax.servlet.http.HttpServlet.service(
at com.evermind._ha.doFilter(.:59)

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