blocking file operation was detected inside the event loop, which can negatively affect performance or cause instability.

[AditaNi]

Hi Stephan,

I have done an analysis with Copilot, because of this errors:

"Detected blocking call to open with args ('/config/custom_components/solarman/inverter_definitions/deye_sg04lp3.yaml',) inside the event loop by custom integration 'solarman' at custom_components/solarman/solarman.py, line 31: with open(self.path + self.lookup_file) as f: (offender: /config/custom_components/solarman/solarman.py, line 31: with open(self.path + self.lookup_file) as f:), please create a bug report at https://github.com/StephanJoubert/home_assistant_solarman/issues For developers, please see https://developers.home-assistant.io/docs/asyncio_blocking_operations/#open Traceback (most recent call last): File "", line 198, in _run_module_as_main File "", line 88, in _run_code File "/usr/src/homeassistant/homeassistant/main.py", line 229, in sys.exit(main()) File "/usr/src/homeassistant/homeassistant/main.py", line 215, in main exit_code = runner.run(runtime_conf) File "/usr/src/homeassistant/homeassistant/runner.py", line 271, in run return loop.run_until_complete(setup_and_run_hass(runtime_config)) File "/usr/local/lib/python3.13/asyncio/base_events.py", line 712, in run_until_complete self.run_forever() File "/usr/local/lib/python3.13/asyncio/base_events.py", line 683, in run_forever self._run_once() File "/usr/local/lib/python3.13/asyncio/base_events.py", line 2050, in _run_once handle._run() File "/usr/local/lib/python3.13/asyncio/events.py", line 89, in _run self._context.run(self._callback, *self._args) File "/usr/src/homeassistant/homeassistant/config_entries.py", line 2654, in _async_forward_entry_setup await entry.async_setup(self.hass, integration=integration) File "/usr/src/homeassistant/homeassistant/config_entries.py", line 672, in async_setup await self.__async_setup_with_context(hass, integration) File "/usr/src/homeassistant/homeassistant/config_entries.py", line 761, in __async_setup_with_context result = await component.async_setup_entry(hass, self) File "/usr/src/homeassistant/homeassistant/components/sensor/init.py", line 100, in async_setup_entry return await hass.data[DATA_COMPONENT].async_setup_entry(entry) File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 221, in async_setup_entry return await self._platforms[key].async_setup_entry(config_entry) File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 418, in async_setup_entry return await self._async_setup_platform(async_create_setup_awaitable) File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 448, in async_setup_platform awaitable = create_eager_task(awaitable, loop=hass.loop) File "/usr/src/homeassistant/homeassistant/util/async.py", line 44, in create_eager_task return Task(coro, loop=loop, name=name, eager_start=True) File "/config/custom_components/solarman/sensor.py", line 89, in async_setup_entry _do_setup_platform(hass, entry.options, async_add_entities) File "/config/custom_components/solarman/sensor.py", line 54, in _do_setup_platform inverter = Inverter(path, inverter_sn, inverter_host, inverter_port, inverter_mb_slaveid, lookup_file) File "/config/custom_components/solarman/solarman.py", line 31, in init with open(self.path + self.lookup_file) as f:"

🔍 What’s Happening
The custom integration solarman is trying to open a YAML file using Python’s open() function:

python
with open(self.path + self.lookup_file) as f:
This line is not asynchronous, meaning it pauses the entire event loop while reading the file. Home Assistant expects all I/O operations in custom components to be non-blocking (i.e., use async methods) to keep the system responsive.

⚠️ Why It Matters
Blocking calls inside the event loop can freeze or slow down your Home Assistant instance.

It’s especially problematic during startup or when many integrations are initializing.

🛠️ What You Can Do
Report the issue: The integration author asks you to file a bug report here: GitHub: StephanJoubert/home_assistant_solarman/issues

Temporary workaround: If the integration still works and this is just a warning, you can continue using it—but keep an eye out for performance issues.

Developer fix (if you're comfortable): The offending line should be rewritten using asynchronous file access, like:

python
async with aiofiles.open(self.path + self.lookup_file, mode='r') as f:
content = await f.read()
But this requires modifying the integration code and ensuring aiofiles is available.

I hope it helps.....if not...then...not good.

Regards
Adrian