WARNING in /var/log/gvm/ospd-scanner.log

Hello, WARNING messages continue to be recorded in /var/log/gvm/ospd-scanner.log at 10-second intervals after updating in a Linux environment.

/var/log/gvm/ospd-scanner.log :


OSPD[1096] 2023-03-10 08:47:15,948: INFO: (ospd.main) Starting OSPd OpenVAS version 22.4.3.

OSPD[1096] 2023-03-15 06:28:27,350: WARNING: (ospd_openvas.messaging.mqtt) Could not connect to MQTT broker, error was: [Errno 111] Connection refused. Trying again in 10s.
OSPD[1096] 2023-03-15 06:28:37,359: WARNING: (ospd_openvas.messaging.mqtt) Could not connect to MQTT broker, error was: [Errno 111] Connection refused. Trying again in 10s.
OSPD[1096] 2023-03-15 06:28:47,361: WARNING: (ospd_openvas.messaging.mqtt) Could not connect to MQTT broker, error was: [Errno 111] Connection refused. Trying again in 10s.
OSPD[1096] 2023-03-15 06:28:57,362: WARNING: (ospd_openvas.messaging.mqtt) Could not connect to MQTT broker, error was: [Errno 111] Connection refused. Trying again in 10s.
OSPD[1096] 2023-03-15 06:29:07,373: WARNING: (ospd_openvas.messaging.mqtt) Could not connect to MQTT broker, error was: [Errno 111] Connection refused. Trying again in 10s.
OSPD[1096] 2023-03-15 06:29:17,377: WARNING: (ospd_openvas.messaging.mqtt) Could not connect to MQTT broker, error was: [Errno 111] Connection refused. Trying again in 10s.
OSPD[1096] 2023-03-15 06:29:27,385: WARNING: (ospd_openvas.messaging.mqtt) Could not connect to MQTT broker, error was: [Errno 111] Connection refused. Trying again in 10s.


A scan can be performed.
Anyone know how to stop this warning?

Thanks.