Null pointer exception

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java.lang.NullPointerException
at java.util.Arrays.mergeSort(Arrays.java:1124)
at java.util.Arrays.mergeSort(Arrays.java:1131)
at java.util.Arrays.mergeSort(Arrays.java:1132)
at java.util.Arrays.mergeSort(Arrays.java:1132)
at java.util.Arrays.mergeSort(Arrays.java:1132)
at java.util.Arrays.mergeSort(Arrays.java:1131)
at java.util.Arrays.mergeSort(Arrays.java:1132)
at java.util.Arrays.mergeSort(Arrays.java:1131)
at java.util.Arrays.mergeSort(Arrays.java:1131)
at java.util.Arrays.sort(Arrays.java:1186)
at java.util.Collections.sort(Collections.java:153)
at com.atlassian.jira.issue.search.providers.DefaultSearchProvider.search(DefaultSearchProvider.java:63)
at com.atlassian.jira.issue.managers.DefaultIssueManager.execute(DefaultIssueManager.java:134)
at com.atlassian.jira.issue.managers.CachingIssueManager.execute(CachingIssueManager.java:82)
at com.atlassian.jira.web.action.browser.Browser.getOpenGroupedByComponent(Browser.java:227)
at com.atlassian.jira.web.action.browser.Browser.getOpenGroupedByComponent(Browser.java:241)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at webwork.util.ValueStack.findValue(ValueStack.java:651)
at webwork.view.taglib.WebWorkBodyTagSupport.findValue(WebWorkBodyTagSupport.java:57)
at webwork.view.taglib.BasicPropertyTag.doStartTag(BasicPropertyTag.java:52)
at _jspPage3_includes_reports_project_compversions_jsp._jspService(_jspPage3_includes_reports_project_compversions_jsp.java:231
at com.orionserver.http.OrionHttpJspPage.service(.:68)
at com.evermind._ct._cxd(.:5703)
at com.evermind.server.http.JSPServlet.service(.:31)
at com.evermind._it.doFilter(.:59)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:45)
at com.evermind._ir.doFilter(.:16)
at com.atlassian.core.security.SecurityFilter.doFilter(SecurityFilter.java:93)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.core.security.LoginFilter.doFilter(LoginFilter.java:104)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:125)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.jira.web.filters.EncodingFilter.doFilter(EncodingFilter.java:53)
at com.evermind._ir.doFilter(.:20)
at com.orionserver.http.patch.PathInvalidationFilter.doFilter(PathInvalidationFilter.java:150)
at com.evermind._efb._plc(.:380)
at com.evermind._efb.include(.:90)
at com.evermind.server.http.EvermindPageContext.include(.:285)
at _jspPage2_secure_views_browser_browseproject_jsp._jspService(_jspPage2_secure_views_browser_browseproject_jsp.java:485)
at com.orionserver.http.OrionHttpJspPage.service(.:68)
at com.evermind._ct._cxd(.:5703)
at com.evermind.server.http.JSPServlet.service(.:31)
at com.evermind._it.doFilter(.:59)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:45)
at com.atlassian.jira.web.filters.SitemeshExcludePathFilter.doFilter(SitemeshExcludePathFilter.java:35)
at com.evermind._ir.doFilter(.:16)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:45)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.core.security.SecurityFilter.doFilter(SecurityFilter.java:93)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.core.security.LoginFilter.doFilter(LoginFilter.java:104)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:125)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.jira.web.filters.EncodingFilter.doFilter(EncodingFilter.java:53)
at com.evermind._ir.doFilter(.:20)
at com.orionserver.http.patch.PathInvalidationFilter.doFilter(PathInvalidationFilter.java:150)
at com.evermind._efb._plc(.:380)
at com.evermind._efb._adc(.:174)
at com.evermind._efb.forward(.:144)
at webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:221)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
at com.evermind._it.doFilter(.:59)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:128)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:60)
at com.atlassian.jira.web.filters.SitemeshExcludePathFilter.doFilter(SitemeshExcludePathFilter.java:35)
at com.evermind._ir.doFilter(.:16)
at com.atlassian.core.security.SecurityFilter.doFilter(SecurityFilter.java:170)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.core.security.LoginFilter.doFilter(LoginFilter.java:191)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:125)
at com.evermind._ir.doFilter(.:20)
at com.atlassian.jira.web.filters.EncodingFilter.doFilter(EncodingFilter.java:53)
at com.evermind._ir.doFilter(.:20)
at com.orionserver.http.patch.PathInvalidationFilter.doFilter(PathInvalidationFilter.java:150)
at com.evermind._efb._plc(.:380)
at com.evermind._efb._adc(.:174)
at com.evermind._cs._yqb(.:614)
at com.evermind._cs._yrb(.:189)
at com.evermind._bx.run(.:62)