Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all firebase react code example

Example: Can't perform a React state update on an unmounted component

useEffect(() => {
    const source = axios.CancelToken.source()

    const fetchUsers = async () => {
        try {
            await Axios.get('/users', {
                cancelToken: source.token,
            })
            // ...
        } catch (error) {
            if (Axios.isCancel(error)) {
            } else {
                throw error
            }
        }
    }

    fetchData()

    return () => {
        source.cancel()
    }
}, [])