synapse-admin_ynh/conf/nginx.conf

#sub_path_only rewrite ^__PATH__$ __PATH__/ permanent;
location __PATH__/ {
    alias __INSTALL_DIR__/;

    index index.html;
    try_files $uri $uri/ /index.html;

    # Include SSOWAT user panel.
    include conf.d/yunohost_panel.conf.inc;
}