I had to install pipx to get kasa to install on my OS.

Bottom line Issue:
ZoneInfoNotFoundError(f"No time zone found with key {key}")
zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key MST7MDT'

Environment:
OS : Debian GNU/Linux 13 (trixie)
OS Kernel : 6.12.47+rpt-rpi-v8

kasa --debug --host 172.16.64.114 on
Discovering device 172.16.64.114 for 10 seconds
DEBUG:kasa.discover:[DISCOVERY] 172.16.64.114 >> {'system': {'get_sysinfo': {}}}
DEBUG:kasa.discover:Waiting a total of 10 seconds for responses...
DEBUG:kasa.discover:[DISCOVERY] 172.16.64.114 << {'system': {'get_sysinfo': {'active_mode': 'schedule',
'alias': '#MASKED_NAME#',
'dev_name': 'Smart Wi-Fi Plug Mini',
'deviceId': 'REDACTED_0A22BC71268038F2A8D3C781DBDEBED',
'err_code': 0,
'feature': 'TIM',
'hwId': 'REDACTED_1D91460D5F5201C65C8A549',
'hw_ver': '5.0',
'icon_hash': '',
'latitude_i': 0,
'led_off': 0,
'longitude_i': 0,
'mac': 'E4:C3:2A:00:00:00',
'mic_type': 'IOT.SMARTPLUGSWITCH',
'model': 'HS105(US)',
'next_action': {'action': 1,
'id': '5DBDFAA268B419837121453B876D957C',
'schd_sec': 59400,
'type': 1},
'obd_src': 'tplink',
'oemId': 'REDACTED_350D76F11728AC99180D5E8',
'on_time': 0,
'relay_state': 0,
'rssi': -38,
'status': 'configured',
'sw_ver': '1.0.2 Build 200819 Rel.103733',
'updating': 0}}}
DEBUG:kasa.device:Initializing 172.16.64.114 of type <class 'kasa.iot.iotplug.IotPlug'>
DEBUG:kasa.device_factory:Finding protocol for 172.16.64.114
DEBUG:kasa.device_factory:Finding protocol for DeviceFamily.IotSmartPlugSwitch
DEBUG:kasa.device_factory:Finding transport for IOT.XOR
DEBUG:kasa.iot.iotdevice:Adding module <Module Schedule (schedule) for 172.16.64.114>
DEBUG:kasa.iot.iotdevice:Adding module <Module Usage (schedule) for 172.16.64.114>
DEBUG:kasa.iot.iotdevice:Adding module <Module Antitheft (anti_theft) for 172.16.64.114>
DEBUG:kasa.iot.iotdevice:Adding module <Module Time (time) for 172.16.64.114>
DEBUG:kasa.iot.iotdevice:Adding module <Module Cloud (cnCloud) for 172.16.64.114>
DEBUG:kasa.iot.iotdevice:Adding module <Module Led (system) for 172.16.64.114>
DEBUG:kasa.iot.iotmodule:Initial update, so consider supported: schedule
DEBUG:kasa.iot.iotdevice:Adding query for <Module Schedule (schedule) for 172.16.64.114>: {'schedule': {'get_rules': {}, 'get_next_action': {}}}
DEBUG:kasa.iot.iotmodule:Initial update, so consider supported: schedule
DEBUG:kasa.iot.iotdevice:Adding query for <Module Usage (schedule) for 172.16.64.114>: {'schedule': {'get_realtime': {}, 'get_daystat': {'year': 2025, 'month': 12}, 'get_monthstat': {'year': 2025}}}
DEBUG:kasa.iot.iotmodule:Initial update, so consider supported: anti_theft
DEBUG:kasa.iot.iotdevice:Adding query for <Module Antitheft (anti_theft) for 172.16.64.114>: {'anti_theft': {'get_rules': {}, 'get_next_action': {}}}
DEBUG:kasa.iot.iotmodule:Initial update, so consider supported: time
DEBUG:kasa.iot.iotdevice:Adding query for <Module Time (time) for 172.16.64.114>: {'time': {'get_time': {}, 'get_timezone': {}}}
DEBUG:kasa.iot.iotmodule:Initial update, so consider supported: cnCloud
DEBUG:kasa.iot.iotdevice:Adding query for <Module Cloud (cnCloud) for 172.16.64.114>: {'cnCloud': {'get_info': {}}}
DEBUG:kasa.iot.iotdevice:Adding query for <Module Led (system) for 172.16.64.114>: {}
DEBUG:kasa.protocols.iotprotocol:172.16.64.114 >> {"system":{"get_sysinfo":{}},"schedule":{"get_rules":{},"get_next_action":{},"get_realtime":{},"get_daystat":{"year":2025,"month":12},"get_monthstat":{"year":2025}},"anti_theft":{"get_rules":{},"get_next_action":{}},"time":{"get_time":{},"get_timezone":{}},"cnCloud":{"get_info":{}}}
DEBUG:kasa.transports.xortransport:Device 172.16.64.114 sending query {"system":{"get_sysinfo":{}},"schedule":{"get_rules":{},"get_next_action":{},"get_realtime":{},"get_daystat":{"year":2025,"month":12},"get_monthstat":{"year":2025}},"anti_theft":{"get_rules":{},"get_next_action":{}},"time":{"get_time":{},"get_timezone":{}},"cnCloud":{"get_info":{}}}
DEBUG:kasa.transports.xortransport:Device 172.16.64.114 query response received
DEBUG:kasa.protocols.iotprotocol:172.16.64.114 << {'anti_theft': {'get_next_action': {'err_code': -2,
'err_msg': 'member not support'},
'get_rules': {'enable': 0,
'err_code': 0,
'rule_list': [],
'version': 2}},
'cnCloud': {'get_info': {'binded': 1,
'cld_connection': 1,
'err_code': 0,
'fwDlPage': '',
'fwNotifyType': -1,
'illegalType': 0,
'server': 'n-devs.tplinkcloud.com',
'stopConnect': 0,
'tcspInfo': '',
'tcspStatus': 1,
'username': '[email protected]'}},
'schedule': {'get_daystat': {'day_list': [{'day': 1,
'month': 12,
'time': 390,
'year': 2025},
{'day': 2,
'month': 12,
'time': 390,
'year': 2025},
{'day': 3,
'month': 12,
'time': 390,
'year': 2025},
{'day': 4,
'month': 12,
'time': 390,
'year': 2025},
{'day': 5,
'month': 12,
'time': 390,
'year': 2025},
{'day': 6,
'month': 12,
'time': 0,
'year': 2025}],
'err_code': 0},
'get_monthstat': {'err_code': 0,
'month_list': [{'month': 6,
'time': 10800,
'year': 2025},
{'month': 7,
'time': 11157,
'year': 2025},
{'month': 8,
'time': 10998,
'year': 2025},
{'month': 9,
'time': 10799,
'year': 2025},
{'month': 10,
'time': 11159,
'year': 2025},
{'month': 11,
'time': 11639,
'year': 2025},
{'month': 12,
'time': 1950,
'year': 2025},
{'month': 1,
'time': 13019,
'year': 2025},
{'month': 2,
'time': 11759,
'year': 2025},
{'month': 3,
'time': 13018,
'year': 2025},
{'month': 4,
'time': 12600,
'year': 2025},
{'month': 5,
'time': 11557,
'year': 2025}]},
'get_next_action': {'action': 1,
'err_code': 0,
'id': '5DBDFAA268B419837121453B876D957C',
'schd_time': 59400,
'type': 1},
'get_realtime': {'err_code': -2, 'err_msg': 'member not support'},
'get_rules': {'enable': 1,
'err_code': 0,
'rule_list': [{'eact': -1,
'enable': 1,
'id': '5DBDFAA268B419837121453B876D957C',
'name': 'name',
'repeat': 1,
'sact': 1,
'smin': 990,
'stime_opt': 0,
'wday': [1, 1, 1, 1, 1, 1, 1]},
{'eact': -1,
'enable': 1,
'id': '3BFB45E465E0A4D574B01A1B55A58B84',
'name': 'name',
'repeat': 1,
'sact': 0,
'smin': 1380,
'stime_opt': 0,
'wday': [1, 1, 1, 1, 1, 1, 1]}],
'version': 2}},
'system': {'get_sysinfo': {'active_mode': 'schedule',
'alias': '#MASKED_NAME#',
'dev_name': 'Smart Wi-Fi Plug Mini',
'deviceId': 'REDACTED_0A22BC71268038F2A8D3C781DBDEBED',
'err_code': 0,
'feature': 'TIM',
'hwId': 'REDACTED_1D91460D5F5201C65C8A549',
'hw_ver': '5.0',
'icon_hash': '',
'latitude_i': 0,
'led_off': 0,
'longitude_i': 0,
'mac': 'E4:C3:2A:00:00:00',
'mic_type': 'IOT.SMARTPLUGSWITCH',
'model': 'HS105(US)',
'next_action': {'action': 1,
'id': '5DBDFAA268B419837121453B876D957C',
'schd_sec': 59400,
'type': 1},
'obd_src': 'tplink',
'oemId': 'REDACTED_350D76F11728AC99180D5E8',
'on_time': 0,
'relay_state': 0,
'rssi': -38,
'status': 'configured',
'sw_ver': '1.0.2 Build 200819 Rel.103733',
'updating': 0}},
'time': {'get_time': {'err_code': 0,
'hour': 6,
'mday': 6,
'min': 33,
'month': 12,
'sec': 12,
'year': 2025},
'get_timezone': {'err_code': 0, 'index': 10}}}
Raised error: 'No time zone found with key MST7MDT'
Traceback (most recent call last):
File "/usr/lib/python3.13/zoneinfo/_common.py", line 12, in load_tzdata
return resources.files(package_name).joinpath(resource_name).open("rb")
~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/usr/lib/python3.13/importlib/resources/_common.py", line 46, in wrapper
return func(anchor)
File "/usr/lib/python3.13/importlib/resources/_common.py", line 56, in files
return from_package(resolve(anchor))
~~~~~~~^^^^^^^^
File "/usr/lib/python3.13/functools.py", line 934, in wrapper
return dispatch(args[0].class)(*args, **kw)
~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
File "/usr/lib/python3.13/importlib/resources/_common.py", line 82, in _
return importlib.import_module(cand)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
File "/usr/lib/python3.13/importlib/init.py", line 88, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "", line 1387, in _gcd_import
File "", line 1360, in _find_and_load
File "", line 1310, in _find_and_load_unlocked
File "", line 488, in _call_with_frames_removed
File "", line 1387, in _gcd_import
File "", line 1360, in _find_and_load
File "", line 1324, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'tzdata'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/root/.local/bin/kasa", line 7, in
sys.exit(cli())
~~~^^
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/kasa/cli/common.py", line 282, in call
asyncio.run(self.main(*args, **kwargs))
~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/asyncio/runners.py", line 195, in run
return runner.run(main)
~~~~~~~~~~^^^^^^
File "/usr/lib/python3.13/asyncio/runners.py", line 118, in run
return self._loop.run_until_complete(task)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
File "/usr/lib/python3.13/asyncio/base_events.py", line 725, in run_until_complete
return future.result()
~~~~~~~~~~~~~^^
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/asyncclick/core.py", line 1443, in main
rv = await self.invoke(ctx)
^^^^^^^^^^^^^^^^^^^^^^
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/kasa/cli/common.py", line 270, in invoke
_handle_exception(self._debug, exc)
~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/kasa/cli/common.py", line 268, in invoke
return await super().invoke(ctx)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/asyncclick/core.py", line 1953, in invoke
await super().invoke(ctx)
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/asyncclick/core.py", line 1306, in invoke
return await ctx.invoke(self.callback, **ctx.params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/asyncclick/core.py", line 873, in invoke
rv = await rv
^^^^^^^^
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/kasa/cli/main.py", line 370, in cli
await dev.update()
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/kasa/iot/iotdevice.py", line 326, in update
await module._post_update_hook()
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/kasa/iot/modules/time.py", line 28, in _post_update_hook
self._timezone = await get_timezone(res.get("index"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/kasa/iot/iottimezone.py", line 24, in get_timezone
return await CachedZoneInfo.get_cached_zone_info(name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/kasa/cachedzoneinfo.py", line 20, in get_cached_zone_info
zinfo = await loop.run_in_executor(None, _get_zone_info, time_zone_str)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/concurrent/futures/thread.py", line 59, in run
result = self.fn(*self.args, **self.kwargs)
File "/root/.local/share/pipx/venvs/python-kasa/lib/python3.13/site-packages/kasa/cachedzoneinfo.py", line 27, in _get_zone_info
return ZoneInfo(time_zone_str)
File "/usr/lib/python3.13/zoneinfo/_common.py", line 24, in load_tzdata
raise ZoneInfoNotFoundError(f"No time zone found with key {key}")
zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key MST7MDT'