Why does a 404 file not found error occur?

Question

Nginx

hello everyone, tell me if there is some kind of automatic blocking by nginx for files like doc or docx?

if he puts a txt or jpg file in a directory on the server, it is located there and is perfectly given to nginx, but doc or docx get a 404 error. Why can doc and docx file types be blocked?

config

server {
listen 80;
server_name test.test.ru;
rewrite        ^ https://$server_name$request_uri? permanent;
}
server {
                listen 443 ssl;
keepalive_timeout    70;
                keepalive_requests   150;
                server_name test.test.ru;
                set $server_root /usr/portal/site;
                ssl_protocols           TLSv1 TLSv1.1 TLSv1.2;
                ssl_dhparam             /etc/ssl/test.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-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
                ssl_prefer_server_ciphers on;
                ssl_certificate  /etc/ssl/certs/key.crt;
                ssl_certificate_key  /etc/ssl/private/privkey.key;
                ssl_session_cache       shared:SSL:10m;
                ssl_session_timeout     10m;
                access_log  /var/log/nginx/access.log  main;
                index index.php;
                error_page   500 502 503 504  /500.html;
                error_page 404 = /404.php;
                proxy_set_header   X-Real-IP        $remote_addr;
                proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
                proxy_set_header  Host        $host:443;
                client_max_body_size 1024M;
                client_body_buffer_size 4M;
                proxy_set_header HTTPS YES;
                add_header X-Frame-Options SAMEORIGIN;
                
                location /  {
                root $server_root;
                expires modified 2d;
                proxy_pass http://upstream;            
        }

                location ~ (.*).docx
        {
                root /usr/portal/site/upload/pics/;
        }
        }

Answer 1

location ~ (.*).docx
{
root /usr/portal/site/upload/pics/;
}
Here is your problem. JPG files are searched on a remote server (proxy_pass directive), and docx files are searched in /usr/portal/site/upload/pics/. Remove\change the location, or put the dock files in the /usr/portal/site/upload/pics/ folder.