Getting error on agent monitoring on checkmk raw-ubuntu 20.04

Hi,

Sorry for the delay. Please see the output below:
OMD[hsmcc]:~$ cmk -D mailsrv2

mailsrv2
Addresses: 192.168.3.3
Tags: [address_family:ip-v4-only], [agent:cmk-agent], [criticality:prod], [ip-v4:ip-v4], [networking:lan], [piggyback:auto-piggyback], [site:hsmcc], [snmp_ds:no-snmp], [tcp:tcp]
Labels:
Host groups: check_mk
Contact groups: all, Servers, check-mk-notify, SuperAdmin
Agent mode: Normal Checkmk agent, or special agent if configured
Type of agent:
TCP: 192.168.3.3:6556
Process piggyback data from /omd/sites/hsmcc/tmp/check_mk/piggyback/mailsrv2
Services:
checktype item params description groups


OMD[hsmcc]:~$

OMD[hsmcc]:~$ cmk --debug -vvI mailsrv2
Discovering services and host labels on: mailsrv2
mailsrv2:

  • FETCHING DATA
    Source: SourceType.HOST/FetcherType.TCP
    [cpu_tracking] Start [7f20858a6fd0]
    Connecting via TCP to 192.168.3.3:6556 (5.0s timeout)
    [TCPFetcher] Fetch with cache settings: DefaultAgentFileCache(path=PosixPath(’/omd/sites/hsmcc/tmp/check_mk/cache/mailsrv2’), max_age=0, disabled=False, use_outdated=False, simulation=False), Cache enabled: True
    Not using cache (Does not exist)
    [TCPFetcher] Execute data source
    Reading data from agent

After this noting happening. Its taking too long to complete. I terminated the service and i got below error:

Closing TCP connection to 192.168.3.3:6556
[cpu_tracking] Stop [7f20858a6fd0 - Snapshot(process=posix.times_result(user=0.0, system=0.0, children_user=0.0, children_system=0.0, elapsed=306.25))]