我有几个通过nginx和certbot提供的虚拟主机，一切正常，创建续订等
authenticator = nginx
installer = nginx
现在我已经使用一些lua代码对location /进行了身份验证检查，并且续订停止了工作。
我试图以此方式将/.well-known/acme-challenge/列入白名单
location /.well-known/acme-challenge/ {
}
没有成功：
- The following errors were reported by the server:
Domain: __________
Type: unauthorized
Detail: Invalid response from
https://________/.well-known/acme-challenge/8Rtd_9JkfGrwXXLBu95TjiAJ4zpLFz1b93j-qXJb8Rc
[18.203.93.223]: "<html>\r\n<head><title>404 Not
Found</title></head>\r\n<body bgcolor=\"white\">\r\n<center><h1>404
Not Found</h1></center>\r\n<hr><center>"
certbot的默认nginx路径是什么？
我应该使用webroot身份验证器吗？