A single-page application developed by vue (which enables opening sub-routes to be displayed on a new tag) is published and placed in nginx, and sub-routes are opened on the new tag, showing 404

nginx.conf

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

    -sharplog_format  main  "$remote_addr - $remote_user [$time_local] "$request" "
    -sharp                  "$status $body_bytes_sent "$http_referer" "
    -sharp                  ""$http_user_agent" "$http_x_forwarded_for"";

    -sharpaccess_log  logs/access.log  main;

    sendfile        on;
    -sharptcp_nopush     on;

    -sharpkeepalive_timeout  0;
    keepalive_timeout  65;

server {
        listen       8086;
        server_name  localhost;

        -sharpcharset koi8-r;

        -sharpaccess_log  logs/host.access.log  main;

        location / {
            root   html/msh;
            index  index.html index.htm;
        }
        location /msh/screen/syn-map {
            root   html/msh;
            index  index.html index.htm;
        }
       }
     //...****
     }