How to fix SSL_do_handshake() failed

Question

After deployong a simple django app on aws EC2,I added ssl certficate using python3-certbot-nginx and everything worked fine. Initially I implemented ssl on myapp1.com by running sudo certbot --nginx -d myapp1.com. Later, I ran the command again but replacing myapp1.com with www.myapp1.com. and the process was successful. HTTPS was active when I entered the url on the browser. However, a soon as I restarted nginx all the webpages started displaying 404 Not Found nginx/1.18.0 (Ubuntu) when I assess the webpages using the IP-address, but 502 Bad Gateway nginx/1.18.0 (Ubuntu) when I assess it using the domain name. I have searched through stack overflow for solution but none worked for my case. When I ran the command /var/log/nginx/error.log I grt the folllowing output:

2021/09/19 02:04:30 [notice] 323820#323820: signal process started
2021/09/19 02:08:20 [crit] 323821#323821: *478 SSL_do_handshake() failed (SSL: error:141CF06C:SSL routines:tls_parse_ctos_key_share:bad key share) while SSL handshaking, client: 107.178.231.248, server: 0.0.0.0:443
2021/09/19 02:12:12 [crit] 323821#323821: *498 SSL_do_handshake() failed (SSL: error:141CF06C:SSL routines:tls_parse_ctos_key_share:bad key share) while SSL handshaking, client: 107.178.238.55, server: 0.0.0.0:443
2021/09/19 02:33:40 [notice] 324069#324069: signal process started
2021/09/19 02:35:12 [alert] 324102#324102: *4 open socket #13 left in connection 6
2021/09/19 02:35:12 [alert] 324102#324102: *5 open socket #14 left in connection 7
2021/09/19 02:35:12 [alert] 324102#324102: aborting
2021/09/19 02:35:34 [crit] 324125#324125: *1 connect() to unix:/var/www/html/myapp/app.sock failed (2: No such file or directory) while connecting to upstream, client: 197.211.59.65, server: myapp1.com, request: "GET /admin/home/ HTTP/1.1", upstream: "http://unix:/var/www/html/myapp/app.sock:/admin/home/", host: "myapp1.com", referrer: "https://myapp1.com/admin/"

# Default server configuration

server {

        # SSL configuration
        #
        #listen 443 ssl default_server;
        #listen [::]:443 ssl default_server;
        #
        # Note: You should disable gzip for SSL traffic.
        # See: https://bugs.debian.org/773332
        #
        # Read up on ssl_ciphers to ensure a secure configuration.
        # See: https://bugs.debian.org/765782
        #
        # Self signed certs generated by the ssl-cert package
        # Don't use them in a production server!
        #include snippets/snakeoil.conf;

        root /var/www/html;

        # Add index.php to the list if you are using PHP
        index index.php index.html index.htm index.nginx-debian.html;

        server_name myapp1.com 18.189.167.3;

        location / {
                proxy_ssl_server_name on;
                include proxy_params;
                proxy_pass http://unix:/var/www/html/myapp/app.sock;
        
                #try_files $uri $uri/ =404;
        }

        # pass PHP scripts to FastCGI server
        #
        location /static/ {
                autoindex on;
                alias /var/www/html/myapp/staticfiles/;
        }

        location ~ \.php$ {
                include snippets/fastcgi-php.conf;
        #
        #       # With php-fpm (or other unix sockets):
                fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
        #       # With php-cgi (or other tcp sockets):
        #       fastcgi_pass 127.0.0.1:9000;
        }

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        location ~ /\.ht {
                deny all;
        }
        location /phpmyadmin/
         {
                 root /usr/share/;
                index index.php;
                try_files $uri $uri/ =404;
        }


    listen [::]:443 ssl ipv6only=on; # managed by Certbot
    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/myapp1.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/myaoo1.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot




}

How do I fix this issue? There are several conflicting solutions I found on the internet. I'm scared some approaches might cause other issues that might cause me to terminate the instance which will be too costly for me.