NDR - Sophos Central shows: Status warning - "Unhealthy: ens160: unhealthy span"

Hello Community,

we experience the problem in the subject.

Appliance NDR in vmware environment seems working well because it comunicates with Sophos Central.

In Sophos Central under Detections filtering with category Network, we can see messages sent by the appliance but its state in red with error  "Unhealthy: ens160: unhealthy span"

Searching in sophos forums I found that this error is related to SPAN1 port but I don' t understand why.

Does anyone have any suggestions for me?

Thanks in advance.

.