Description
Steps to reproduce:
- Log in to back office.
- Go to Admin / Users / Shop users / Private customers.
- Add new user with filled in fields Salutation and Customer group.
- Edit created user.
Actual result:
See attached screenshots.
Newly created users with filled in fields Salutation and Customer group aren't editable because an error 500 occurred.
Expected result:
User can be edited and no exception occurs.
Note:
An error 500 occurs also for creating new users with filled in Customer group field.