ValueError: 38.919354838784784 is not a a valid integer.

[sentry-io]

Sentry Issue: LOGGI-WEB-AF7K

TypeError: integer argument expected, got float
  File "base/shortener.py", line 135, in true_char
    char = _converter(integer, _to_char())
  File "base/shortener.py", line 49, in _converter
    values = [to(value) for _is, to in rules.items() if _is(value)]
  File "base/shortener.py", line 49, in <listcomp>
    values = [to(value) for _is, to in rules.items() if _is(value)]
  File "base/shortener.py", line 111, in to_lower
    return chr(i + LOWER_OFFSET)

ValueError: 38.919354838784784 is not a a valid integer.
(3 additional frame(s) were not displayed)
...
  File "shares/notifications.py", line 659, in send_notification
    _send_sms(shareds, conf=sms_conf, **send_kw)
  File "shares/notifications.py", line 558, in _send_sms
    'short_url': shared.get_short_url(),
  File "shares/models.py", line 129, in get_short_url
    self.key = dehydrate(self.pk + SignedShared.SHORTENER_OFFSET)\
  File "base/shortener.py", line 161, in dehydrate
    string = true_char(remainder) + string
  File "base/shortener.py", line 137, in true_char
    raise ValueError('{} is not a a valid integer.'.format(integer))