google cloud functions エラー

現在、google cloud functionsでgmailの送信スクリプトを関数テストで実行したところ以下のエラーがでてしまい、先に進めません。解決策はありますでしょうか。ご教授いただけたら幸いです。
設定やソースコードは下記の動画を参考にしました。
参考url:　 https://www.youtube.com/watch?v=SuaHjAv5QJA

error
1出力　完了
2Error: function terminated. Recommended action: inspect logs for termination reason. Additional troubleshooting documentation can be found at https://cloud.google.com/functions/docs/troubleshooting#logging Details:
3500 Internal Server Error: The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.
4
5ログ　利用できません

json
1# secret.josonファイルの中身です
2
3{'email':"メールアドレス",
4 'pass':"12桁のWindowsアプリパス"}
5

python
1import base64
2import smtplib
3from email.mime.text import MIMEText
4from email.utils import formatdate
5import json
6
7def create_message(from_addr, to_addr, bcc_addrs, subject, body):
8    msg = MIMEText(body)
9    msg['Subject'] = subject
10    msg['From'] = from_addr
11    msg['To'] = to_addr
12    msg['Bcc'] = bcc_addrs
13    msg['Date'] = formatdate()
14    return msg
15
16def send(from_addr, to_addrs, msg, my_pass):
17    smtpobj = smtplib.SMTP('smtp.gmail.com', 587) 
18    smtpobj.ehlo()
19    smtpobj.starttls()
20    smtpobj.ehlo()
21    smtpobj.login(from_addr, my_pass)
22    smtpobj.sendmail(from_addr, to_addrs, msg.as_string())
23    smtpobj.close()
24  
25def job():
26    with open('secret.json') as f:
27        info = json.load(f)
28         
29    FROM_ADDRESS = info['email']
30    MY_PASS = info['pass']
31    
32    TO_ADDRESS = '宛先メールアドレス'
33    BCC = ''
34    
35    SUBJECT = 'test'
36    
37    BODY = 'これは練習です'
38    
39    msg = create_message(FROM_ADDRESS, TO_ADDRESS, BCC, SUBJECT, BODY)
40    send(FROM_ADDRESS, TO_ADDRESS, msg, MY_PASS)
41