Config flow could not be loaded: 500 Internal Server Error Server got itself in trouble

[nglocanovic94]

Hi,

I'm having trouble adding the integration. When adding, the following message appears:
"Config flow could not be loaded: 500 Internal Server Error Server got itself in trouble".

I once had the integration successfully added and configured. Then I wanted to remove some entities of this integration and this was the first time the error message appeared.
I tried to remove the integration and now I cannot add it anymore.

This is what the LOG shows:

Logger: aiohttp.server
Source: /usr/local/lib/python3.12/site-packages/aiohttp/web_protocol.py:433
First occurred: 10:39:36 AM (1 occurrences)
Last logged: 10:39:36 AM

Error handling request
Traceback (most recent call last):
  File "/usr/local/lib/python3.12/site-packages/aiohttp/web_protocol.py", line 462, in _handle_request
    resp = await request_handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/aiohttp/web_app.py", line 537, in _handle
    resp = await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/aiohttp/web_middlewares.py", line 114, in impl
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/security_filter.py", line 92, in security_filter_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/forwarded.py", line 83, in forwarded_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/request_context.py", line 26, in request_context_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 85, in ban_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 242, in auth_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/headers.py", line 32, in headers_middleware
    response = await handler(request)
               ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/http.py", line 73, in handle
    result = await handler(request, **request.match_info)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/decorators.py", line 81, in with_admin
    return await func(self, request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/data_validator.py", line 74, in wrapper
    return await method(view, request, data, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/config/config_entries.py", line 172, in post
    return await self._post_impl(request, data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/config/config_entries.py", line 179, in _post_impl
    return await super()._post_impl(request, data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/data_entry_flow.py", line 84, in _post_impl
    result = await self._flow_mgr.async_init(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 1296, in async_init
    flow, result = await self._async_init(flow_id, handler, context, data)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 1331, in _async_init
    result = await self._async_handle_step(flow, flow.init_step, data)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 516, in _async_handle_step
    result: _FlowResultT = await getattr(flow, method)(user_input)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/thermal_comfort/config_flow.py", line 500, in async_step_user
    schema = build_schema(
             ^^^^^^^^^^^^^
  File "/config/custom_components/thermal_comfort/config_flow.py", line 360, in build_schema
    humidity_sensors = get_sensors_by_device_class(
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/thermal_comfort/config_flow.py", line 309, in get_sensors_by_device_class
    additional_sensors = list(filter(f, additional_sensors))
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/thermal_comfort/config_flow.py", line 114, in filter_useless_domain
    Platform.MAILBOX,
    ^^^^^^^^^^^^^^^^
AttributeError: type object 'Platform' has no attribute 'MAILBOX'`

What else can I do?

Thanks in advance!

[gyik666]

Same here, after upgrading to 2024.09 this happens to me when adding new items.

[ClemensAdrian]

If you delete the line containing Platform.MAILBOX in ../custom_components/thermal_comfort/config_flow.py it works. Just a temporary hack, my first day using Home Assistant :-)

[nglocanovic94]

OMG it works! Thanks a lot!
As you said. A temporary fix but at least it works for now!

[suurt8ll]

I'm having the same issue after upgrading to 2024.09. @ClemensAdrian 's workaround works for now. Thanks!

[jhandschick]

Same here.

[jhandschick]

If you delete the line containing Platform.MAILBOX in ../custom_components/thermal_comfort/config_flow.py it works. Just a temporary hack, my first day using Home Assistant :-)

Unfortunately didn't work for me.

[maxx-maurer]

Same here after upgrading to 2024.09. @ClemensAdrian 's workaround works for now. Thanks!

[conlutio]

Thanks, works for me as well.

@jhandschick

Unfortunately didn't work for me.

You did a restart after changing the file?

[jhandschick]

Thanks, works for me as well.

@jhandschick

Unfortunately didn't work for me.

You did a restart after changing the file?

Thanks that worked. I only restarted the yaml configuration.

[garagara93]

@ClemensAdrian thank you so much! works for me

[klaushipp]

Workaround works for me as well.
Thank you

[networxnet]

If you delete the line containing Platform.MAILBOX in ../custom_components/thermal_comfort/config_flow.py it works. Just a temporary hack, my first day using Home Assistant :-)

Can't edit configflow.py from HA.

@dolezsa can you fix the code?