Email pull - 'Communication' object has no attribute '_attachments'

Could someone halp me out on this?

I receiving lately this messages about email pull:

Address
pull_from_email_account

Error	

{'method_name': 'pull_from_email_account', 'log': <function log at 0x7fda76b01e18>, 'retry': 0, 'is_async': True, 'user': 'Administrator', 'kwargs': {'email_account': 'Replies'}, 'job_name': 'pull_from_email_account|Replies', 'event': 'all', 'method': <function pull_from_email_account at 0x7fda76a077b8>, 'site': 'site1.local'}
Traceback (most recent call last):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/background_jobs.py", line 99, in execute_job
    method(**kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/email/doctype/email_account/email_account.py", line 724, in pull_from_email_account
    email_account.receive()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/email/doctype/email_account/email_account.py", line 295, in receive
    attachments = [d.file_name for d in communication._attachments]
AttributeError: 'Communication' object has no attribute '_attachments'

Installed Apps

ERPNext: v12.3.1 (version-12)

Frappe Framework: v12.1.0 (version-12)

Hi,
I do encounter the same problem. Any hint how to solve is appreciated.

Traceback (most recent call last):
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/rq/worker.py", line 793, in perform_job
rv = job.perform()
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/rq/job.py", line 599, in perform
self._result = self._execute()
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/rq/job.py", line 605, in _execute
return self.func(*self.args, **self.kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/background_jobs.py", line 99, in execute_job
method(**kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/email/doctype/email_account/email_account.py", line 724, in pull_from_email_account
email_account.receive()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/email/doctype/email_account/email_account.py", line 295, in receive
attachments = [d.file_name for d in communication._attachments]
AttributeError: 'Communication' object has no attribute '_attachments'

Kind regards,
David