i try to using diffirent port but sharepoint site get error: ERR_EMPTY_RESPONSE


stream {
upstream ecm {
hash $remote_addr consistent;
server ecm.test.vn:80 weight=5;
server 10.68.8.182:80 max_fails=3 fail_timeout=30s;
server ecm.test.vn:443 weight=5;
server 10.68.8.182:444 max_fails=3 fail_timeout=30s;
ntlm on;
}

server {
listen 444 ssl; #Line 27


ssl_certificate /etc/nginx/ssl/test/test.pem;
ssl_certificate_key /etc/nginx/ssl/test/test.key;
ssl_session_cache shared:SSL:10m;

ssl_session_timeout 5m;

proxy_connect_timeout 1s;
proxy_timeout 3s;
proxy_pass ecm.test.vn;
}
}