Error processing post_process() on "<class 'sentry.plugins.sentry_mail.MailProcessor'>": TypeError("object of type 'int' has no len()"

[nonZero]

On a fresh install of 3.5.7 from pypi on ubuntu, I get the following when capturing:

Error processing post_process() on "<class 'sentry.plugins.sentry_mail.MailProcessor'>": TypeError("object of type 'int' has no len()",)

Stacktrace (most recent call last):

  File "sentry/processors/base.py", line 24, in send_group_processors
    logger.exception('Error processing post_process() on %r: %s', inst.__class__, e)

  File "sentry/plugins/bases/notify.py", line 79, in post_process
    self.notify_users(group, event)

  File "sentry/plugins/sentry_mail/__init__.py", line 134, in notify_users
    fail_silently=fail_silently,

  File "sentry/plugins/sentry_mail/__init__.py", line 75, in _send_mail
    msg.send(fail_silently=fail_silently)

  File "django/core/mail/message.py", line 251, in send
    return self.get_connection(fail_silently).send_messages([self])

  File "django/core/mail/backends/smtp.py", line 92, in send_messages
    self._lock.release()

  File "django/core/mail/backends/smtp.py", line 101, in _send
    for addr in email_message.recipients()]

  File "django/core/mail/message.py", line 106, in sanitize_address
    nm = str(Header(nm, encoding))

  File "email/header.py", line 200, in __str__
    return self.encode()

  File "email/header.py", line 407, in encode
    newchunks += self._split(s, charset, targetlen, splitchars)

  File "email/header.py", line 292, in _split
    elen = charset.encoded_header_len(encoded)

  File "email/charset.py", line 345, in encoded_header_len
    return len(s)

[LaundroMat]

I have the exact same problem.

Additional Data:

filename    'base.py'
funcName    'send_group_processors'
lineno  24

Module Versions:

django  1.3.1
djcelery    2.5.1
kombu   2.1.1
kombu.transport.django  1.0.0
raven   1.4.6
sentry  3.5.7
south   0.7.3

[dcramer]

It looks like recipients are empty but it doesnt realize it somehow. This might be fixed with the attached commit.

[dcramer]

Please reopen if you see this issue again

[LaundroMat]

It works - thanks!