登录JumpServer时，报错WebSocket未连接

直接访问JumpServer的web端口是没有问题的，但是我使用反向代理到JumpServer的web端口时报错了，报错如下

官方反向代理配置：
https://docs.jumpserver.org/zh/v3/installation/proxy/#2-nginx

    location / {
        proxy_pass http://172.31.0.5:8180/;
        proxy_http_version 1.1;
        proxy_buffering off;
        proxy_request_buffering off;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $remote_addr;
    }

即可正常访问