Nginx负载平衡错误400

Question

可以摆脱此问题。 具有三个nginx 1.14，一个用于负载均衡，两个用于在dotnet Web应用程序上重定向的Nginx Web服务器。 我在负载平衡上使用SSL，这是我的conf：

"message": "Class App\\GraphQL\\Type\\UserType does not exist",
  "exception": "ReflectionException",
  "file": "C:\\wamp64\\www\\laravel-project\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
  "line": 779,

在两个Nginx上，我获得默认站点-可用的conf：

/etc/nginx/conf.d/load-balancer.conf
upstream backend {
#   least_conn;
   server 172.22.69.102;
   server 172.22.69.103;
}

# This server accepts all traffic to port 80 and passes it to the upstream.
# Notice that the upstream name and the proxy_pass need to match.

server {
   listen 80;
   server_name xxx.ddns.net;
   return 301 https://$server_name$request_uri;

  #location / {
  #    proxy_pass http://backend;
  #}
}

server {
   listen 443 ssl;
   server_name xxx.ddns.net;

   ssl_certificate /etc/nginx/ssl/xxx_ddns_net.crt;
   ssl_certificate_key /etc/nginx/ssl/monserveur.key;

#   error_log /var/log/error.log error;
#  access_log /var/log/acess.log error;

   location / {
        proxy_pass http://backend;
   }
}

我一直收到http错误400

任何帮助都会感激