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

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java.lang.NullPointerException:
at oracle.security.sso.server.policy.FilePolicyManager.getAuthLevel(FilePolicyManager.java:374)
at oracle.security.sso.server.auth.AuthDirector.getAuthLevel(AuthDirector.java:199)
at oracle.security.sso.server.ui.SSOLoginServlet.doPost(SSOLoginServlet.java:323)
at oracle.security.sso.server.ui.SSOLoginServlet.doGet(SSOLoginServlet.java:285)

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