Send mail error some times

[pytomtoto]

"Traceback (most recent call last):
File "E:\code\alter_svc\venv\lib\site-packages\aiosmtplib\protocol.py", line 251, in _readline
read_task, timeout, loop=self._loop
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37-32\lib\asyncio\tasks.py", line 384, in wait_for
return await fut
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37-32\lib\asyncio\streams.py", line 585, in readuntil
raise IncompleteReadError(chunk, None)
asyncio.streams.IncompleteReadError: 0 bytes read on a total of None expected bytes

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "F:\tmp\alter-svc\api\views\mail_view.py", line 26, in send_simple
content=data['content'],
File "E:\code\alter_svc\venv\lib\site-packages\sanic_mail.py", line 143, in send_email
return await self.smtp.send_message(message)
File "E:\code\alter_svc\venv\lib\site-packages\aiosmtplib\smtp.py", line 235, in send_message
result = await self.sendmail(sender, recipients, flat_message, timeout=timeout)
File "E:\code\alter_svc\venv\lib\site-packages\aiosmtplib\smtp.py", line 153, in sendmail
await self.mail(sender, options=mail_options, timeout=timeout)
File "E:\code\alter_svc\venv\lib\site-packages\aiosmtplib\esmtp.py", line 228, in mail
b"MAIL", from_string, *options_bytes, timeout=timeout
File "E:\code\alter_svc\venv\lib\site-packages\aiosmtplib\connection.py", line 288, in execute_command
*args, timeout=timeout
File "E:\code\alter_svc\venv\lib\site-packages\aiosmtplib\protocol.py", line 187, in execute_command
response = await self.read_response(timeout=timeout)
File "E:\code\alter_svc\venv\lib\site-packages\aiosmtplib\protocol.py", line 127, in read_response
line = await self._readline(timeout=timeout)
File "E:\code\alter_svc\venv\lib\site-packages\aiosmtplib\protocol.py", line 262, in _readline
raise SMTPServerDisconnected("Unexpected EOF received")
aiosmtplib.errors.SMTPServerDisconnected: Unexpected EOF received
"

python 3.7
sanic 18.12.0
sanic-mail 0.0.2
aiosmtplib 1.0.4