Update nginx.conf

nginx.conf

@@ -11,7 +11,6 @@ location ^~ /
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header REMOTE-HOST $remote_addr;
     proxy_set_header Upgrade $http_upgrade;
-    proxy_set_header Connection $connection_upgrade;
     proxy_http_version 1.1;
     # proxy_hide_header Upgrade;