在一键部署过程中的一个报错

[Karl-Han]

/usr/local/lib/python3.5/dist-packages/requests/packages/urllib3/connectionpool.py:838: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/security.html
InsecureRequestWarning)
Traceback (most recent call last):
File "deploy.py", line 1102, in
conf = conf.replace("{{cert_file}}", certs_dict['cert'])
TypeError: Can't convert 'NoneType' object to str implicitly

类型转换失败。。。不知道这个一键部署问题该怎么解决。
还有一个，就是好像获取证书那里有个bug，我一键尝试了一个下午都没有成功，在官网上certbot不够10分钟就成功了。