when I look inside ospd-opnvas.log, the only 3 lines I see, and they seem to be repeated every minute, are:
Warning: (ospd_openvas.openas) could not gather openvas settings. Reason Command '['openvas','-s']' returned non-zero exit status 127
Error: (ospd_openvas.daemin) openvas executable not available. Please install openvas into your path
INFO: (ospd.main) Shutting own server
I am running the community edition on Ubuntu 22.04 using the Docker install
I guess that the ospd-openvas service is not running. You should start it and enable if you want to automatically start on boot.
sudo systemctl start ospd-openvas
sudo systemctl enable ospd-openvas
It seems you have not installed openvas-scanner at all, or you have installed it in a non accessible path.
Do you have the last Docker images? The ospd-openvas images includes the openvas scanner. I find this warnings/erros quite rares. Are you following the oficial Greenbone instructions?