We are not able to view the permissions page after the upgrade to 4.8.7 .

When we are trying to open the permissions page it is giving this error.

      16:35:03.575 [https-jsse-nio-443-exec-36] ERROR com.netiq.idm.rest.access.PermissionAssignmentService - [RBPM] Internal exception occurred processing REST service java.lang.NullPointerException: null at com.netiq.idm.rest.access.PermissionAssignmentService.getAllUserPermissions(PermissionAssignmentService.java:2140) ~[IDMAccessRest.jar:?] at com.netiq.idm.rest.access.PermissionAssignmentService.getLoggedInUserPermissionAssignmentsBasedOnFilter(PermissionAssignmentService.java:1985) ~[IDMAccessRest.jar:?] at jdk.internal.reflect.GeneratedMethodAccessor996.invoke(Unknown Source) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:168) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:67) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:259) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:71) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:990) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:941) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:932) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:384) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:451) ~[jersey-bundle-1.1.5.jar:1.1.5] at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:632) ~[jersey-bundle-1.1.5.jar:1.1.5] at javax.servlet.http.HttpServlet.service(HttpServlet.java:623) ~[servlet-api.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209) ~[catalina.jar:9.0.74]

Can anyone please help