Unable to Login into Teamsite Administrator Console & Getting Login Failed Error

Hello,
We have installed Teamsite 16.6.1 on Linux Environment. We are able to login and access EStudio, CCPro but we are unable to access Administration Console and getting below errors. Kindly please help to resolve this issue.

All Services are up & running and we could see some exceptions in the core.log which is under standalone/log with below information

2020-03-26 14:26:58,348 [default task-20] WARN org.springframework.web.servlet.PageNotFound () - No mapping for GET /iw-dcf/action/jsStrings.js
2020-03-26 14:26:58,372 [default task-20] ERROR com.interwoven.ui.admin.filter.AdminPermissionFilter () - Unable to resolve current user from request.
java.lang.NullPointerException
at deployment.iw-wcmweb.ear.iw-admin.war//com.interwoven.ui.admin.filter.AdminPermissionFilter.isMasterUser(AdminPermissionFilter.java:112)
at deployment.iw-wcmweb.ear.iw-admin.war//com.interwoven.ui.admin.filter.AdminPermissionFilter.doFilter(AdminPermissionFilter.java:83)
at deployment.iw-wcmweb.ear//org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
at deployment.iw-wcmweb.ear//org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
at io.undertow.servlet@2.0.21.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet@2.0.21.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at deployment.iw-wcmweb.ear//com.interwoven.ui.core.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:265)
at deployment.iw-wcmweb.ear//org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
at deployment.iw-wcmweb.ear//org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
at io.undertow.servlet@2.0.21.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet@2.0.21.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at deployment.iw-wcmweb.ear//org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at deployment.iw-wcmweb.ear//org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at io.undertow.servlet@2.0.21.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
at io.undertow.servlet@2.0.21.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
at deployment.iw-wcmweb.ear.iw-admin.war//com.interwoven.wcm.service.security.filter.CSRFTokenResponseHeaderBindingFilter.doFilterInternal(CSRFTokenResponseHeaderBindingFilter.java:53)
at deployment.iw-wcmweb.ear//org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at deployment.iw-wcmweb.ear//org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)