I'm having all checkbox checked in the permissions tab which means I have admin previliges. But still this error comes in my log

Im using AEM 6.3.

GET /libs/cq/security/userinfo.json HTTP/1.1] org.apache.sling.engine.impl.SlingRequestProcessorImpl service: Uncaught Throwablejava.lang.NullPointerException: nullat com.day.cq.security.widgets.impl.UserInfoServlet.getName(UserInfoServlet.java:396)at com.day.cq.security.widgets.impl.UserInfoServlet...

I have a requirement of populating field 2(drop down) values based on the user selection of field 1(drop down). This drop-down (field 1)is multiple selection field where author can select more than one values. I have a delete field associated with the field 1 drop-down. In dialog js, I need to have ...