404 page not working Nginx Ubuntu with letsencrypt installed

Hi,

Site works great, letsencrypt works perfect. I can’t get 404 page to show and not sure why. Here’s my server code:

server { server_name www. example.com; return 301 $scheme:// example.com/$request_uri; }

server { listen 443 ssl;

server_name www. example.com  example.com;

ssl_certificate /etc/letsencrypt/live/ example.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/ example.com/privkey.pem;


location / {
    proxy_pass http://localhost:3000;
    proxy_http_version 1.1;
    proxy_set_header upgrade $http_upgrade;
    proxy_set_header connection 'upgrade';
    proxy_set_header host $host;
    proxy_cache_bypass $http_upgrade;

  }

 location ~ /.well-known {
            allow all;
 }

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_dhparam /etc/ssl/certs/dhparam.pem;
    ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-$
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;
    ssl_stapling on;
    ssl_stapling_verify on;
    add_header Strict-Transport-Security max-age=15768000;

}

server { listen 80; server_name example.com www. example.com; return 301 https://$host$request_uri;

    error_page 404 /404.html;
    location = /404.html {
            root /usr/share/nginx/html;
            internal;
    }

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
            root /usr/share/nginx/html;
            internal;
    }

    location /testing {
            fastcgi_pass unix:/does/not/exist;
    }

}

404.html and 50x.html are in the correct location: /usr/share/nginx/html

Thank you!