I have a node app hosted in AWS ec2 and installed letsencrypt certificates. When I am trying to access the API, it is giving error

Connection - obsolete connection settings The connection to this site is encrypted and authenticated using TLS 1.0, ECDHE_RSA, and AES_256_CBC with HMAC-SHA1. TLS 1.0 is obsolete. Enable TLS 1.2 or later. AES_256_CBC is obsolete. Enable an AES-GCM-based cipher suite.

SSL Certificates shows correctly from letsencrypt

I have infact set TLS 1.2 AES-GCM-based cipher in config file. my nginx version is

nginx version: nginx/1.16.1 OpenSSL 1.0.2k-fips 26 Jan 2017

Any pointers?

here is my nginx.conf file snippet

http {
include         /etc/nginx/mime.types;
default_type    application/octet-stream;

access_log  /var/log/nginx/access.log  main;

sendfile            on;
tcp_nopush          on;
tcp_nodelay         on;

keepalive_timeout   65;
types_hash_max_size 2048;



server {
    listen       80;
listen       443 ssl;
    server_name  localhost;
    root         /usr/share/nginx/html;

    ssl_certificate      /opt/ssl/cacert.pem;
    ssl_certificate_key  /opt/ssl/privkey.pem;
    ssl_session_timeout  5m;
    ssl_protocols SSLv2 TLSv1.2 TLSv1.1 TLSv1;
    #ssl_protocols  SSLv2 SSLv3 TLSv1;
    ssl_ciphers  HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers   on;

    #charset koi8-r;

   
}

server {
    listen       443 ssl http2;
    server_name  aws.qureme.co.in;
    root         /usr/share/nginx/html;

    ssl_certificate /etc/letsencrypt/live/
    ssl_certificate_key /etc/letsencrypt/live/

    ssl_session_timeout  5m;
ssl_protocols TLSv1.2 TLSv1.1 TLSv1 TLSv1.3;
    ssl_prefer_server_ciphers on;
ssl_ciphers ECDH+AESGCM:ECDH+AES256:ECDH+AES128:DH+3DES:!ADH:!AECDH:!MD5;
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
    ssl_ecdh_curve secp384r1;
    ssl_session_tickets off;

    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 8.8.8.8;


}

}