Monitoring with snmp does not work #401

<monitoring>
  <monitor host="192.168.197.87" type="snmp">
    <snmp version="v1" community="public" port="161"/>
  </monitor>
</monitoring>

=INFO REPORT==== 5-Apr-2023::23:13:00 ===
    ts_config_server:(4:<0.135.0>) SYSINFO:Tsung version: 1.8.0

=INFO REPORT==== 5-Apr-2023::23:13:00 ===
    ts_config_server:(4:<0.135.0>) SYSINFO:Erlang version: Erlang/OTP 25 [erts-13.2] [source] [64-bit] [smp:12:12] [ds:12:12:10] [async-threads:8] [jit:ns]

=INFO REPORT==== 5-Apr-2023::23:13:00 ===
    ts_config_server:(4:<0.135.0>) SYSINFO:System architecture x86_64-redhat-linux-gnu

=INFO REPORT==== 5-Apr-2023::23:13:00 ===
    ts_config_server:(4:<0.135.0>) SYSINFO:Current path: /usr/lib/tsung/tsung-1.8.0/ebin/tsung.beam

=INFO REPORT==== 5-Apr-2023::23:13:00 ===
      ts_os_mon_snmp:(5:<0.154.0>) starting os_mon_snmp with args {"192.168.197.87",
                                                                   {161,
                                                                    "public",
                                                                    v1,[]},
                                                                   10000,
                                                                   {global,
                                                                    ts_mon}}

=INFO REPORT==== 5-Apr-2023::23:13:00 ===
      ts_os_mon_snmp:(5:<0.157.0>) Initialize SNMP application

=INFO REPORT==== 5-Apr-2023::23:13:00 ===
      ts_os_mon_snmp:(5:<0.157.0>) Initialize SNMP manager: ok

=INFO REPORT==== 5-Apr-2023::23:13:00 ===
      ts_os_mon_snmp:(5:<0.157.0>) Register SNMP manager: ok

=INFO REPORT==== 5-Apr-2023::23:13:00 ===
      ts_os_mon_snmp:(5:<0.157.0>) SNMP initialization: ok

...

=ERROR REPORT==== 5-Apr-2023::23:13:10 ===
** Generic server <0.157.0> terminating
** Last message in was {timeout,#Ref<0.3636501632.2333081607.216382>,
                                send_request}
** When Server state == {state,
                         {global,ts_mon},
                         [],10000,undefined,"snmp://192.168.197.87:161",
                         "192.168.197.87",
                         [[1,3,6,1,4,1,2021,11,52,0],
                          [1,3,6,1,4,1,2021,11,50,0],
                          [1,3,6,1,4,1,2021,4,6,0],
                          [1,3,6,1,4,1,2021,10,1,5,1]],
                         {dict,4,16,16,8,80,48,
                          {[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},
                          {{[],[],[],[],[],[],
                            [[[1,3,6,1,4,1,2021,11,52,0]|
                              {cpu_system,sample_counter,
                               #Fun<ts_os_mon_snmp.0.104503733>}]],
                            [],
                            [[[1,3,6,1,4,1,2021,10,1,5,1]|
                              {load,sample,#Fun<ts_os_mon_snmp.3.104503733>}]],
                            [],[],[],
                            [[[1,3,6,1,4,1,2021,11,50,0]|
                              {cpu_user,sample_counter,
                               #Fun<ts_os_mon_snmp.1.104503733>}]],
                            [[[1,3,6,1,4,1,2021,4,6,0]|
                              {freemem,sample,
                               #Fun<ts_os_mon_snmp.2.104503733>}]],
                            [],[]}}},
                         v1,161,"public",
                         {192,168,197,87}}
** Reason for termination ==
** {'function not exported',
       [{snmpm,sync_get,
            ["tsung","snmp://192.168.197.87:161",
             [[1,3,6,1,4,1,2021,11,52,0],
              [1,3,6,1,4,1,2021,11,50,0],
              [1,3,6,1,4,1,2021,4,6,0],
              [1,3,6,1,4,1,2021,10,1,5,1]],
             5000],
            []},
        {ts_os_mon_snmp,snmp_get,5,
            [{file,"src/tsung_controller/ts_os_mon_snmp.erl"},{line,245}]},
        {ts_os_mon_snmp,handle_info,2,
            [{file,"src/tsung_controller/ts_os_mon_snmp.erl"},{line,164}]},
        {gen_server,try_dispatch,4,[{file,"gen_server.erl"},{line,1123}]},
        {gen_server,handle_msg,6,[{file,"gen_server.erl"},{line,1200}]},
        {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,240}]}]}