Help with SNMP node data

Hi @mmahacek @dino2gnt Can u help me with SNMP availability data, which we are not receiving data from particular node.
Ex: we have 2 same server with different ip address with same network segment.
in one server we are getting SNMP availability data image
in another server we are not getting SNMP availability data image
in few node we are not getting (HTTP,HTTPS, ICMP,SSH etc) image

what will be reason behind that?

kindly update on this