Impacted versions:11

Steps to reproduce:Add new address type "Other" and save, while saving partner it will give error

Current behavior:

Expected behavior:

Video/Screenshot link (optional):Error:
Odoo Server Error

Traceback (most recent call last):
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/http.py", line 646, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/http.py", line 307, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/tools/pycompat.py", line 87, in reraise
    raise value
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/http.py", line 683, in dispatch
    result = self._call_function(**self.params)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/http.py", line 339, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/service/model.py", line 97, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/http.py", line 332, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/http.py", line 927, in __call__
    return self.method(*args, **kw)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/http.py", line 512, in response_wrap
    response = f(*args, **kw)
  File "/home/p5q-pro/PycharmProjects/odoo11/addons/web/controllers/main.py", line 924, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/home/p5q-pro/PycharmProjects/odoo11/addons/web/controllers/main.py", line 916, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/api.py", line 689, in call_kw
    return call_kw_multi(method, model, args, kwargs)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/api.py", line 680, in call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/addons/base/res/res_partner.py", line 514, in write
    result = result and super(Partner, self).write(vals)
  File "/home/p5q-pro/PycharmProjects/odoo11/addons/mail/models/mail_thread.py", line 277, in write
    result = super(MailThread, self).write(values)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/models.py", line 3011, in write
    self._write(old_vals)
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/models.py", line 3136, in _write
    field.write(self.with_context(rel_context), vals[name])
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/fields.py", line 2253, in write
    comodel.create(act[2])
  File "/home/p5q-pro/PycharmProjects/odoo11/odoo/addons/base/res/res_partner.py", line 530, in create
    vals['image'] = self._get_default_image(vals.get('type'), vals.get('is_company'), vals.get('parent_id'))
  File "/home/p5q-pro/PycharmProjects/odoo11/custom/tms/models/res_partner.py", line 46, in _get_default_image
    image = parent_image and parent_image.decode('base64') or None
LookupError: 'base64' is not a text encoding; use codecs.decode() to handle arbitrary codecs


""" Find a partner with the given ``email`` or use :py:method:`~.name_create`
            to create one
            :param str email: email-like string, which should contain at least one email,
                e.g. ``"Raoul Grosbedon <r.g@grosbedon.fr>"``"""
        assert email, 'an email is required for find_or_create to work'
        emails = tools.email_split(email)
        if emails:
            email = emails[0]
        partners = self.search([('email', '=ilike', email)], limit=1)
        return partners.id or self.name_create(email)[0]
    def _get_gravatar_image(self, email):
        email_hash = hashlib.md5(email.lower().encode('utf-8')).hexdigest()
        url = "https://www.gravatar.com/avatar/" + email_hash
        try:
            res = requests.get(url, params={'d': '404', 's': '128'}, timeout=5)
            if res.status_code != requests.codes.ok:
                return False
        except requests.exceptions.ConnectionError as e:
            return False
        return base64.b64encode(res.content)
    @api.multi
    def _email_send(self, email_from, subject, body, on_error=None):