fixed: show result if no category groups are defined

src/utils.js

@@ -266,6 +266,11 @@ export function WebSocketProvider({
           setUserProfileStateUsername(body.User.Username);
           setAllUsers(body.AllUsers);
           setAllRoles(body.AllRoles);
+
+          if (body.CategoryGroups === null) {
+            body.CategoryGroups = [];
+          }
+
           setCategoryGroups(body.CategoryGroups);
           setGroupTasks(body.GroupTasks);
           setGroupTasksSteps(body.GroupTasksSteps);