请问各位。在设置https证书之后，前段中发送的http请求无响应，这个问题有解决方案么？ 以下为我的nginx配置文件： #user  nobody; worker_processes  1; #error_log  logs/error.log; #error_log  logs/error.log  notice; #error_log  logs/error.log  info; #pid        logs/nginx.pid; events {     worker_connections  1024; } http {     include       mime.types;     default_type  application/octet-stream;     #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '     #                  '$status $body_bytes_sent "$http_referer" '     #                  '"$http_user_agent" "$http_x_forwarded_for"';     #access_log  logs/access.log  main;     sendfile        on;     #tcp_nopush     on;     #keepalive_timeout  0;     keepalive_timeout  65;     #gzip  on;  server {         listen       80;         server_name  fzoj.fun;         return 301 https://$server_name$request_uri;     } server {         listen 443 ssl;         server_name fzoj.fun;         ssl_certificate /etc/letsencrypt/live/fzoj.fun/fullchain.pem;         ssl_certificate_key /etc/letsencrypt/live/fzoj.fun/privkey.pem;                     root   /data/webroot/dist;             index  index.html index.htm;             try_files $uri $uri/index.html /index.html;             location /api {   proxy_pass  http://127.0.0.1:8120;   proxy_set_header Host $proxy_host;   proxy_set_header X-Real-IP $remote_addr;   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;   proxy_buffering off;   proxy_set_header Connection ""; }   } }