Local server only available at 127.0.0.1

Dear all
I’ve just installed a local Blynk server on a raspberry pi 3
Everything is OK, I get the “Blynk server successfully started” message
I wanted to access the admin page, but when I use the IP address (192.168.1.78:7443) I cannot connect to the server (ERR_CONNECTION_RESET error)
If I use 127.0.0.1:7443 address, I can access the admin page
I guess it’s a configuration issue but I could not find where to fix it ?

Hello. You need to use 9443 port.

https://github.com/blynkkk/blynk-server#administration-ui

thank you for the quick answer
I don’t understand the 9443 port
the tutorial says “you open the administration interface at https://IP_BLINK_SERVER:7443/admin”, and i did access it on the 7443 port on 127.0.0.1 ?

Properly an older tutorial… look at the official, and most current, server instructions I posted above.

What tutorial?