OSPD OpenVAS - Could not gather openVAS settings

GVM versions

gsad: Greenbone Security Assistant 21.4.1~dev1
gvmd: Greenbone Vulnerability Manager 21.4.2
openvas-scanner: OpenVAS 21.4.1
gvm-libs: gvm-libs 21.4.1

Environment

Operating system:
Kernel: Linux ******* 4.19.0-17-amd64 #1 SMP Debian 4.19.194-2 (2021-06-21) x86_64 GNU/Linux
Installation method / source: https://greenbone.github.io/docs/gvm-21.04/index.html

I have followed the OpenVAS installation documentation to the letter, but I have an error, opsd-openvas refuses to start, no matter what I try to do, here is the error I have:

OSPD[1526] 2021-08-06 15:51:06,359: WARNING: (ospd_openvas.openvas) Could not gather openvas settings. Reason Command ‘[‘openvas’, ‘-s’]’ returned non-zero exit status 1.
OSPD[1526] 2021-08-06 15:51:06,367: INFO: (ospd.main) Shutting-down server …

This is the result when I do openvas -s

non_simult_ports = 139, 445, 3389, Services/irc
allow_simultaneous_ips = yes
safe_checks = yes
nasl_no_signature_check = yes
time_between_request = 0
expand_vhosts = yes
max_checks = 10
optimize_test = yes
report_host_details = yes
debug_tls = 0
config_file = /etc/openvas/openvas.conf
unscanned_closed_udp = yes
drop_privileges = no
test_empty_vhost = no
plugins_timeout = 320
cgi_path = /cgi-bin:/scripts
checks_read_timeout = 5
unscanned_closed = yes
auto_enable_dependencies = yes
log_whole_attack = no
db_address = /run/redis-openvas/redis.sock
vendor_version =
test_alive_hosts_only = yes
log_plugins_name_at_load = no
scanner_plugins_timeout = 36000
timeout_retry = 3
max_hosts = 30
include_folders = /var/lib/openvas/plugins
open_sock_max_attempts = 5
plugins_folder = /var/lib/openvas/plugins

I have added this in the /etc/sudoers file :

%gvm ALL = NOPASSWD: /usr/local/sbin/openvas

When I run OpenVAS, I get a right error, but if I run openVAS in sudo mode, with the GVM user, I get the right result…

sudo su - gvm
openvas -s ERROR
sudo openvas -s OK

I tested several things, impossible to find where the problem comes from…