ResourceServlet.service() has thrown a NullPointerException

We found this prefix in 2 webpages.
MapChildren (2)Typical messages (1)TraceDetailed Map
  1. java.lang.NullPointerException
    1.   at java.util.regex.Matcher.getTextLength()
    2.   at java.util.regex.Matcher.matches()
    3.   at oracle.adfinternal.view.faces.webapp.DispatchServletResponse.setContentType()
    4.   at oracle.adf.view.faces.webapp.ResourceServlet._setHeaders()
    5.   at oracle.adf.view.faces.webapp.ResourceServlet.doGet()
    6.   at javax.servlet.http.HttpServlet.service()
    7.   at javax.servlet.http.HttpServlet.service()
    8.   at oracle.adf.view.faces.webapp.ResourceServlet.service()
  1. NPE when running ADF application

    First:10 years ago
    Last:2 years ago
    Author:ramanujam95
  2. NPE when running ADF application

    First:10 years ago
    Last:2 years ago
    Author:ramanujam95
MessageNumber of crashes
<No message>2
  1. java.lang.NullPointerException
    1.   at java.util.regex.Matcher.getTextLength()
    2.   at java.util.regex.Matcher.matches()
    3.   at oracle.adfinternal.view.faces.webapp.DispatchServletResponse.setContentType()
    4.   at oracle.adf.view.faces.webapp.ResourceServlet._setHeaders()
    5.   at oracle.adf.view.faces.webapp.ResourceServlet.doGet()
    6.   at javax.servlet.http.HttpServlet.service()
    7.   at javax.servlet.http.HttpServlet.service()
    8.   at oracle.adf.view.faces.webapp.ResourceServlet.service()