Bugfix GroupStatusManager

gms/src/main/java/it/inaf/ia2/gms/manager/GroupStatusManager.java

@@ -46,7 +46,7 @@ public class GroupStatusManager extends UserAwareComponent {
 
         Permission groupPermission = permissionsManager.getCurrentUserPermission(parentGroup);
 
-        if (Permission.includes(Permission.VIEW_MEMBERS, groupPermission)) {
+        if (!Permission.includes(groupPermission, Permission.VIEW_MEMBERS)) {
             throw new UnauthorizedException("VIEW_MEMBERS permission is needed for performing this action");
         }
 
@@ -82,6 +82,7 @@ public class GroupStatusManager extends UserAwareComponent {
         for (int i = 0; i < groups.size(); i++) {
             GroupEntity group = groups.get(i);
             String groupName = names.get(group.getId());
+            if (groupName != null) {
                 List<String> users = membersMap.get(group.getId());
                 if (users != null) {
                     for (String userId : users) {
@@ -95,6 +96,7 @@ public class GroupStatusManager extends UserAwareComponent {
                     }
                 }
             }
+        }
 
         Collections.sort(rows, (r1, r2) -> (r1[0]).compareTo(r2[0]));