A lot of problems…
you are missing Husernet.h file from Husarnet ESP32 library…
cannot access the ESP32 device from another network using http://[fc…]
too many… Ubuntu,cli,npm,docker,… Did I miss something?. What’s wrong?. Not to trust cloud servers but to have Husarnet? That’s it, I stick to ESP NOW +Websocket.Wrong documentation, hard to understand, very complicated, too technical, many steps, different codes for the same purpose, in different sections… .ino files into Platformio projects…chaos