while accessing R12.1.3 login page getting below Error

Web services are all up and running. when trying to open login page receives below error.

500 Internal Server Error

Servlet error: An exception occurred. The current application deployment descriptors do not allow for including it in this response. Please consult the application log for details.


19/08/18 20:12:47.445 html: Error initializing servletjava.lang.NoClassDefFoundError: Could not initialize class oracle.apps.fnd.profiles.Profiles        at oracle.apps.fnd.sso.AppsLoginRedirect.AppsSetting(AppsLoginRedirect.java:239)        at oracle.apps.fnd.sso.AppsLoginRedirect.init(AppsLoginRedirect.java:287)        at com.evermind.server.http.HttpApplication.loadServlet(HttpApplication.java:2528)        at com.evermind.server.http.HttpApplication.findServlet(HttpApplication.java:5006)        at com.evermind.server.http.HttpApplication.findServlet(HttpApplication.java:4930)        at com.evermind.server.http.HttpApplication.initPreloadServlets(HttpApplication.java:5118)        at com.evermind.server.http.HttpApplication.initDynamic(HttpApplication.java:1283)        at com.evermind.server.http.HttpApplication.<init>(HttpApplication.java:848)        at com.evermind.server.ApplicationStateRunning.getHttpApplication(ApplicationStateRunning.java:435)        at com.evermind.server.Application.getHttpApplication(Application.java:592)        at com.evermind.server.http.HttpSite$HttpApplicationRunTimeReference.createHttpApplicationFromReference(HttpSite.java:2280)        at com.evermind.server.http.HttpSite$HttpApplicationRunTimeReference.<init>(HttpSite.java:2199)        at com.evermind.server.http.HttpSite.initApplications(HttpSite.java:701)        at com.evermind.server.http.HttpSite.setConfig(HttpSite.java:308)        at com.evermind.server.http.HttpServer.setSites(HttpServer.java:280)        at com.evermind.server.http.HttpServer.setConfig(HttpServer.java:180)        at com.evermind.server.ApplicationServer.initializeHttp(ApplicationServer.java:2541)        at com.evermind.server.ApplicationServer.setConfig(ApplicationServer.java:1058)        at com.evermind.server.ApplicationServerLauncher.run(ApplicationServerLauncher.java:131)        at java.lang.Thread.run(Thread.java:619)