Error Preventing Restart - "argument of type ‘NoneType’ is not iterable"

Configuration
1

I am receiving an error when I attempt to reboot the system. It says “argument of type ‘NoneType’ is not iterable”.

Since the log stopped at the Helper section, I attempted to just delete all my helpers and that did not correct the problem.

I also restored a couple of backups and the error is still there, though Home Assistant has been able to reboot just fine with the error, unless I try to use the UI to reboot. So ideally fixing the error is the best solution.

> Logger: homeassistant.components.websocket_api.http.connection
Source: helpers/config_validation.py:810
Integration: Home Assistant WebSocket API (documentation, issues)
First occurred: 5:28:52 PM (2 occurrences)
Last logged: 5:30:33 PM
[140263567565888] argument of type 'NoneType' is not iterable
[140262893487104] argument of type 'NoneType' is not iterable
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 200, in handle_call_service
    await hass.services.async_call(
  File "/usr/src/homeassistant/homeassistant/core.py", line 1787, in async_call
    task.result()
  File "/usr/src/homeassistant/homeassistant/core.py", line 1824, in _execute_service
    await cast(Callable[[ServiceCall], Awaitable[None]], handler.job.target)(
  File "/usr/src/homeassistant/homeassistant/components/hassio/__init__.py", line 515, in async_handle_core_service
    errors = await conf_util.async_check_ha_config_file(hass)
  File "/usr/src/homeassistant/homeassistant/config.py", line 982, in async_check_ha_config_file
    res = await check_config.async_check_ha_config_file(hass)
  File "/usr/src/homeassistant/homeassistant/helpers/check_config.py", line 233, in async_check_ha_config_file
    p_validated = platform_schema(p_validated)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/validators.py", line 232, in __call__
    return self._exec((Schema(val) for val in self.validators), v)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/validators.py", line 351, in _exec
    v = func(v)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 272, in __call__
    return self._compiled([], data)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 818, in validate_callable
    return schema(data)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 272, in __call__
    return self._compiled([], data)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 595, in validate_dict
    return base_validate(path, iteritems(data), out)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 387, in validate_mapping
    cval = cvalue(key_path, value)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 818, in validate_callable
    return schema(data)
  File "/usr/src/homeassistant/homeassistant/helpers/config_validation.py", line 543, in verify
    return cast(dict, schema(value))
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 272, in __call__
    return self._compiled([], data)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 595, in validate_dict
    return base_validate(path, iteritems(data), out)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 387, in validate_mapping
    cval = cvalue(key_path, value)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/validators.py", line 229, in _run
    return self._exec(self._compiled, value, path)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/validators.py", line 353, in _exec
    v = func(path, v)
  File "/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py", line 818, in validate_callable
    return schema(data)
  File "/usr/src/homeassistant/homeassistant/helpers/config_validation.py", line 810, in validator
    if key in config:
TypeError: argument of type 'NoneType' is not iterable
2

Which HA version are you running? Anything in the logbook around this time?

3

I’m using version 2023.2.5 and can’t seem to find anything in logbook. At this point I have no idea how far back the problem goes because apparently the system DOES come back if restarted in any other way. I haven’t tried forcing it to restart but I’m pretty sure it’s rebooted since the error surfaced.

Is there a way to see what’s stopping the config check with more detail than what I posted?

4

Alas, I have no idea how you could find more information. It,s just an assumption, but it sounds to me like an error in automation/script.

5

So technically if I open up each automation and then try to save it, if there’s a problem it should tell me and not save? Since I’m pretty sure HA validates everything when it tries to save.

6

Not mandatory. For example, this is obviously wrong


service: light.turn_off
data: 
  brightness: 10
target:
  entity_id: light.couch_licht

but will be saved and the UI editor doesn’t grumble at all.

7

True - but would that prevent HA from restarting during a config check? Do you know if disabled automations are checked? I’d rather not delete them all, but I could go through and disable them all.

8

No, HA restarts without any problems. Did you change anything in configuration.yaml?

9

Not recently. And nothing seems to be “broken” - I just get the error when I try to check/restart.

I just cleared the Automations.yaml, reloaded automations, and then ran the system check and got the same error. Very strange. I don’t know how to do the same for Helpers, since they aren’t in a separate YAML file that I can see.

11

Did anyone ever get to the bottom of this, I am seeing a similar issue, log as follows:

Logger: homeassistant.components.websocket_api.http.connection
Source: helpers/config_validation.py:828
Integration: Home Assistant WebSocket API (documentation, issues)
First occurred: 6:25:03 PM (4 occurrences)
Last logged: 6:36:03 PM

[1548932072] argument of type ‘NoneType’ is not iterable
Traceback (most recent call last):
File “/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py”, line 199, in handle_call_service
await hass.services.async_call(
File “/usr/src/homeassistant/homeassistant/core.py”, line 1808, in async_call
task.result()
File “/usr/src/homeassistant/homeassistant/core.py”, line 1845, in _execute_service
await cast(Callable[[ServiceCall], Awaitable[None]], handler.job.target)(
File “/usr/src/homeassistant/homeassistant/helpers/service.py”, line 762, in admin_handler
await result
File “/usr/src/homeassistant/homeassistant/components/homeassistant/init.py”, line 297, in async_handle_reload_all
if errors := await conf_util.async_check_ha_config_file(hass):
File “/usr/src/homeassistant/homeassistant/config.py”, line 982, in async_check_ha_config_file
res = await check_config.async_check_ha_config_file(hass)
File “/usr/src/homeassistant/homeassistant/helpers/check_config.py”, line 234, in async_check_ha_config_file
p_validated = platform_schema(p_validated)
File “/usr/local/lib/python3.10/site-packages/voluptuous/validators.py”, line 232, in call
return self._exec((Schema(val) for val in self.validators), v)
File “/usr/local/lib/python3.10/site-packages/voluptuous/validators.py”, line 351, in _exec
v = func(v)
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 272, in call
return self._compiled([], data)
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 818, in validate_callable
return schema(data)
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 272, in call
return self._compiled([], data)
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 595, in validate_dict
return base_validate(path, iteritems(data), out)
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 387, in validate_mapping
cval = cvalue(key_path, value)
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 818, in validate_callable
return schema(data)
File “/usr/src/homeassistant/homeassistant/helpers/config_validation.py”, line 545, in verify
return cast(dict, schema(value))
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 272, in call
return self._compiled([], data)
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 595, in validate_dict
return base_validate(path, iteritems(data), out)
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 387, in validate_mapping
cval = cvalue(key_path, value)
File “/usr/local/lib/python3.10/site-packages/voluptuous/validators.py”, line 229, in _run
return self._exec(self._compiled, value, path)
File “/usr/local/lib/python3.10/site-packages/voluptuous/validators.py”, line 353, in _exec
v = func(path, v)
File “/usr/local/lib/python3.10/site-packages/voluptuous/schema_builder.py”, line 818, in validate_callable
return schema(data)
File “/usr/src/homeassistant/homeassistant/helpers/config_validation.py”, line 828, in validator
if key in config:
TypeError: argument of type ‘NoneType’ is not iterable

System is working fine, and no obvious errors, but I have added some helpers recently.

12

OK, found an indentation error in one of the new template / sensor additions. Why are python/YAML error messages so bloody unhelpful, what’s wrong with ‘you are missing an indent’. 8>.

2 Likes
13

Is there any way to find this without combing through every YAML file separately looking for an errant indentation? That’s going to take forever. Can I copy and paste it someplace online that’ll validate it?

14

Not that I know of. What have you changed since it last worked.??

15

I actually don’t know. Because the system will reboot when I update the actual HA software so I didn’t notice it was a problem for a while.

16

Found it the slow-going way. I commented out each YAML include until I found the one that had it. Then I cut and pasted each section until I found the section. Then I cut and pasted each entry until I found the entry. I wish there was a better way but now it works.

17

And it was an indentation error… Yes??
I was going to suggest using the ’ partial reload’ functions to at least find the offending module.

18

Yeah - and I tried the partial reload, but it was one of the YAMLs that can’t be controlled there. Took a while but figured it out.

19

Could i ask what is wrong with it?

20

@lachi3tesn
The light.turn_off service provides no additional data (like brightness).