It is not RasPBX.
It is a plain raspbian where I installed Asterisk/FreePBX following some guides (mainly this Asterisk FreePbx su Raspberry Pi 4 e Raspberry Pi OS Buster - Edmond's Weblog), adapting the versions to Asterisk 20/FreePbx 16.
I see only sip logs also in the console.
I checked this:
Bug in Asterisk Logfiles Module ver 15.0.4
But it seems not the case.
Permissisons on folder/files seem ok:
I am a bit lost