After installing Greenbone (gvm), the first scan showed the error: Could not connect to scanner
Here's how to solve this problem

1) Go to the /run/ospd/ directory cd /run/ospd

2) Rename the socket file mv ospd.sock ospd-openvas.sock

3) Next, edit the configuration file ospd-openvas.conf. This is necessary because after the first two steps the scanning started, but after receiving the Running status it ended with an error. In the log file gvmd.log I found that the Scanner now wants to connect to a socket named ospd.sock, that is, by the old name. Therefore, open the /etc/gvm/ospd-openvas.conf file with any editor and change the unix_socket line as in the screenshot
confFile

4) If gvm was running before, then stop it gvm-stop

5) Be sure to restart the computer in any case, even if gvm was not running

I hope, like me, after the work done, you will get a positive result like here
fix1

fix2
GVM versions

gsa: Greenbone Security Assistant 22.9.1~git

gvm: Greenbone Vulnerability Manager 23.6.2

openvas-scanner: OpenVAS 23.4.1

gvm-libs: 22.10.0
Environment

Operating system: Linux kali 6.6.15-amd64 0000001 SMP PREEMPT_DYNAMIC Kali 6.6.15-2kali1 (2024-05-17) x86_64 GNU/Linux

Installation method / source: (packages, source installation) apt-get install gvm

I described this problem in more detail here https://github.com/greenbone/gvmd/issues/2246