Fully functional hotspot without the flash/hotspot folder... It is possible?

I’m totally new to mikrotik, so my question can be very trivial, please forgive me.
The question is about the Hotspot config:
in /ip hotspot server profiles, the default, report as HTML Directory “flash/hotspot” but in /file print i see only the following lines

[admin@MikroTik] > /file print

NAME TYPE SIZE CREATION-TIME

0 skins directory jan/01/1970 01:00:03
1 pub directory mar/08/2018 15:59

The HotSpot Works fine as the logging and all the rest I setup.
Now I would like to edit the html login page to insert my Hotel logo, but I cannot reach the html directory.
What’s wrong?