TypeError: snmp_section() got an unexpected keyword argument 'parse_funtion'

Troubleshooting
, ,
1

CMK version:
2.1.0p33

OS version:
Ubuntu 20.04.6

Error message:
TypeError: snmp_section() got an unexpected keyword argument ‘parse_funtion’

Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins)
OMD[nagios]:~/local/lib/check_mk/base/plugins/agent_based$ cmk --debug -vvn nexans-switch01
Trying to acquire lock on /omd/sites/nagios/var/check_mk/crashes/base/19831ff4-52e9-11ee-ad70-55f85aa5a838/crash.info
Got lock on /omd/sites/nagios/var/check_mk/crashes/base/19831ff4-52e9-11ee-ad70-55f85aa5a838/crash.info
Releasing lock on /omd/sites/nagios/var/check_mk/crashes/base/19831ff4-52e9-11ee-ad70-55f85aa5a838/crash.info
Released lock on /omd/sites/nagios/var/check_mk/crashes/base/19831ff4-52e9-11ee-ad70-55f85aa5a838/crash.info
Traceback (most recent call last):
File “/omd/sites/nagios/bin/cmk”, line 79, in
errors = config.load_all_agent_based_plugins(check_api.get_check_api_context)
File “/omd/sites/nagios/lib/python3/cmk/base/config.py”, line 1522, in load_all_agent_based_plugins
errors = agent_based_register.load_all_plugins()
File “/omd/sites/nagios/lib/python3/cmk/base/api/agent_based/register/init.py”, line 50, in load_all_plugins
raise exception
File “/omd/sites/nagios/lib/python3/cmk/utils/plugin_loader.py”, line 48, in load_plugins_with_exceptions
importlib.import_module(full_name)
File “/omd/sites/nagios/lib/python3.9/importlib/init.py”, line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File “”, line 1030, in _gcd_import
File “”, line 1007, in _find_and_load
File “”, line 986, in _find_and_load_unlocked
File “”, line 680, in _load_unlocked
File “”, line 850, in exec_module
File “”, line 228, in _call_with_frames_removed
File “/omd/sites/nagios/local/lib/python3/cmk/base/plugins/agent_based/nexans_temp.py”, line 78, in
register.snmp_section(
TypeError: snmp_section() got an unexpected keyword argument ‘parse_funtion’

Hi, I am currently trying to write some custom snmp checks for our Nexans Switch hosts. I tried following the official documentation for the development of snmp plugins aswell as reading up on some examples, fellow CheckMK users created.
The issue is I am getting the error mentioned above. Which I don’t really understand, since I checked the source code and for the snmp_section there is a keyword ‘parse_function’. However this is my whole plugin, located in the agent_based directory of my site:

#!/usr/bin/env python3

from dataclasses import dataclass
from typing import Optional
from cmk.base.plugins.agent_based.agent_based_api.v1.type_defs import (
    DiscoveryResult,
    CheckResult,
    StringTable,
)

from cmk.base.plugins.agent_based.agent_based_api.v1 import (
    register,
    Service,
    Result,
    SNMPTree,
    contains,
    State,
    check_levels,
)

@dataclass
class NexansTemp:
    infoTemperature: int
    highlimit: int

def parse_nexans_temp(string_table: StringTable) -> Optional[NexansTemp]:
    try:
        infoTemperature, highlimit = string_table[0]
    except IndexError:
        return

    infoTemperature = int(infoTemperature)
    highlimit = int(highlimit)
    return NexansTemp(
        infoTemperature=infoTemperature,
        highlimit=highlimit,
    )

def discovery_nexans_temp(section: NexansTemp) -> DiscoveryResult:
    yield Service()

def check_nexans_temp(params, section: NexansTemp) -> CheckResult:
    yield from check_levels(
        value=section.infoTemperature,
        label='Temperature',
        levels_upper=params['levels_upper'],
        levels_lower=params['level_lower'],
        render_func=lambda v: f'{v}°C',
        metric_name='temp',
        boundaries=(0,100),
    )
    yield Result(state=State.OK,
                notice=f'Lower/upper levels reported by the device: 5°C/{section.highlimit}°C')

register.snmp_section(
    name='nexans_temp',
    parse_funtion=parse_nexans_temp,
    fetch=SNMPTree(
        base='.1.3.6.1.4.1.266.20.1',
        oids=[
            '12', # temp
            '13', # max temp
        ]
    ),
    detect=contains('.1.3.6.1.4.1.266.20.1.1', 'GigaSwitch'),
)

register.check_plugin(
    name='nexans_temp',
    service_name='Temperature',
    discovery_function=discovery_nexans_temp,
    check_function=check_nexans_temp,
    check_default_parameters={'levels_upper': (65, 70), 'levels_lower': (7, 5)},
    check_ruleset_name='nexans_temp',
)

I hope somebody can help me understand, since I am kinda lost here.

Thanks in advance & have a great day @everyone reading.

Best regards,
Constantin Bettels