React
Can't perform a React state update on an unmounted component
Can't perform a React state update on an unmounted component.
React detected a state update attempt after a component has been unmounted, indicating a memory leak or async issue.
Error AtlasError Documentation and ResolutionObserved message
Can't perform a React state update on an unmounted component.
Why it happens
- An async operation completes after the component unmounts.
- A subscription or event listener was not cleaned up.
- setState is called in a stale closure.
- Timers or intervals were not cleared.
How to fix it
- Cancel async operations using AbortController or flags.
- Clean up subscriptions in useEffect return functions.
- Clear timeouts and intervals on unmount.
- Check component mount state before updating.
Official reference
React Docs: Effects and LifecycleRelated errors
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