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java.lang.NullPointerException: 	at java.util.regex.Matcher.getTextLength(Matcher.java:758)	at java.util.regex.Matcher.matches(Matcher.java:388)	at oracle.adfinternal.view.faces.webapp.DispatchServletResponse.setContentType(DispatchServletResponse.java:31)	at oracle.adf.view.faces.webapp.ResourceServlet._setHeaders(ResourceServlet.java:393)	at oracle.adf.view.faces.webapp.ResourceServlet.doGet(ResourceServlet.java:178)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:748)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)	at oracle.adf.view.faces.webapp.ResourceServlet.service(ResourceServlet.java:135)