修復 Nginx 報錯(502)：upstream sent too big header while reading response header from upstream

修改 Nginx.conf 檔案，加入或修改下列值

proxy_buffer_size  128k;
proxy_buffers   32 32k;
proxy_busy_buffers_size 128k;

修改 host 的 conf 檔案，加入下列：

fastcgi_buffer_size 128k;
fastcgi_buffers 4 256k;
fastcgi_busy_buffers_size 256k;