etherpad_ynh/conf/nginx.conf

location __PATH__/ {

  # Force usage of https
  if ($scheme = http) {
    rewrite ^ https://$server_name$request_uri? permanent;
  }

#sub_path_only  rewrite                ^__PATH__$ __PATH__/ permanent;
#sub_path_only  rewrite                ^__PATH__/admin$ __PATH__/admin/ permanent;
  proxy_pass             http://127.0.0.1:__PORT__/;
  proxy_set_header       Host $host;
  proxy_buffering off;
  more_set_headers "X-Frame-Options : ALLOWALL";

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

location ~* __PATH__/p/[^/]*(_|%|\*)[^/]*/export/etherpad {
    return 404;
}