Fix OptionsFlow AttributeError on Home Assistant 2025.12+ (500 error on options/reconfigure) - #2
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HA 2025.12 finished the deprecation of manually setting OptionsFlow.config_entry in __init__: it is now a read-only property populated by the framework. The old boilerplate pattern now raises: AttributeError: property 'config_entry' of 'TermoAlertOptionsFlowHandler' object has no setter ...on any attempt to open the options/reconfigure dialog (surfaces in the UI as a generic 500 Internal Server Error on the config flow endpoint). Fix: drop the __init__ override and the config_entry argument passed to it in async_get_options_flow(); config_entry is still available via the inherited property everywhere it's read later in the class. Reproduced and fixed against Home Assistant 2026.9.1; the underlying framework change shipped in 2025.12, so this affects every HA version from 2025.12 onward.
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Problem
Opening the options/reconfigure dialog for this integration fails with a generic
500 Internal Server Errorin the UI ("Config flow could not be loaded"). The Home Assistant log shows:Cause
Home Assistant deprecated manually setting
OptionsFlow.config_entryin__init__a while back, and the deprecation period ended in Home Assistant 2025.12 - after that release,config_entryis a read-only property populated automatically by the framework, and the old boilerplate pattern (self.config_entry = config_entryin__init__) raises anAttributeError. This affects every HA version from 2025.12 onward (reproduced and verified fixed on 2026.9.1).Fix
Removed the
__init__override onTermoAlertOptionsFlowHandlerand theconfig_entryargument passed to it fromasync_get_options_flow(). Nothing else changes -self.config_entryis still available everywhere it's read later in the class (async_step_init), since the baseOptionsFlowclass now sets it for you.Tested locally: options flow opens and saves correctly on HA 2026.9.1.
Affected Home Assistant versions
Any Home Assistant version 2025.12 or later.