34 140155781154560 [2019-02-23 11:01:02,455] ERROR trytond.convert Could not delete id: 4 of model res.user
There should be some relation that points to this resource
You should manually fix this and restart --update=module
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/trytond/convert.py", line 797, in post_import
    Model.delete([Model(db_id)])
  File "/usr/local/lib/python3.5/dist-packages/trytond/res/user.py", line 414, in delete
    cls.raise_user_error('delete_forbidden')
  File "/usr/local/lib/python3.5/dist-packages/trytond/error.py", line 74, in raise_user_error
    raise UserError(error)
trytond.exceptions.UserError: ('UserError', ('Les utilisateurs ne peuvent pas être supprimé pour des raisons de journalisation.\nVous devez les désactiver à la place.', ''))