Dantel WebMon Walking issue

it is now showing in the cmk

+ ANALYSE DISCOVERED HOST LABELS
Trying host label discovery with: if, inv_if, snmp_info, snmp_os, snmp_uptime, webmon_slot3
Trying host label discovery with: 
SUCCESS - Found no host labels
+ ANALYSE DISCOVERED SERVICES
+ EXECUTING DISCOVERY PLUGINS (5)
  Trying discovery with: webmon_slot3, uptime, docker_container_status_uptime, snmp_info, interfaces
  1 interfaces
  1 snmp_info
  1 uptime
SUCCESS - Found 3 services
OMD[cvt]:~/local/lib/check_mk/base/plugins/agent_based$ 

If i do a manual bulk walk on it i get the same problem where it attempts the 3.0 and then stops.

OMD[cvt]:~/local/lib/check_mk/base/plugins/agent_based$ snmpgetnext -v2c -c public 192.168.xxx.xxx .1.3.6.1.4.1.994.3.4.7.20.1.3
iso.3.6.1.4.1.994.3.4.7.20.1.3.0 = No Such Instance currently exists at this OID
OMD[cvt]:~/local/lib/check_mk/base/plugins/agent_based$ snmpbulkwalk -v2c -c public 192.168.xxx.xxx .1.3.6.1.4.1.994.3.4.7.20.1.3
iso.3.6.1.4.1.994.3.4.7.20.1.3.0 = No Such Instance currently exists at this OID