Issue with a custom code

I have been working on a preexisting custom code on Flutter Flow web and I am getting the following error:

lib/custom_code/actions/reverse_algo.dart:224:31: Error: The getter 'prefer_age_min' isn't defined for the class 'UsersRecord'.

- 'UsersRecord' is from 'package:m_m_u_iram/backend/schema/users_record.dart' ('lib/backend/schema/users_record.dart').

However, I am not able to find/locate/navigate to the UserRecord class. Can someone please guide me here.