The module throws an error in the logs, because in Odoo 16 the re.users model uses batch creation of records:
`The model odoo.addons.hide_menu_user.models.res_user is not overriding the create method in batch`
Steps to fix:
1. Added correct decorator "@api.model_create_multi"
2. renamed parameter "vals" to "vals_list" to emphasize that it is a list of vals for a list of records to be created
3. Ususally, one would loop over vals_list (for vals in vals_list), but no modifications to vals are done here, to it so it is not necessary in this case.
AjmalCybro
Markus Kirch