Begin of the insertion### QA-System

- myproject.finn.de
-End of the insertion Begin of the deletion On myproject.finn.de,End of the deletion MyProject Version 4.0.pre7 Begin of the insertion
-End of the insertion Core Begin of the insertion3.0.0pre21.End of the insertion Begin of the deletion 3.0.0pre21End of the deletion

Begin of the insertion### Preconditions

- Existing User

### Reproduction

1. Go to admin-panel
2. Click users
3. ChooseEnd of the insertion Begin of the deletion I deleted an account via the admin-panel<s><span style="text-align:right;">users</span></s>\> chooseEnd of the deletion user Begin of the insertion
4. End of the insertion Begin of the deletion -\>End of the deletion delete -\> Begin of the insertionok

### Expected

UserEnd of the insertion Begin of the deletion ok.
Got an 500 Internal Error but userEnd of the deletion is Begin of the insertiondeleted and message about succesful deleting the user.

### Actual

User is deleted but Code 500.End of the insertion Begin of the deletion deleted.End of the deletion