Chowla's polynomial conjecture for the Liouville function

Let $\lambda$ be the Liouville function. Let $f(x)\in\mathbb Z[x]$ be a polynomial that is not of the form $cg(x)^2$, where $c\in\mathbb Z$ and $g(x)\in\mathbb Z[x]$. Chowla's polynomial conjecture.

$$\sum_{n=1}^{x}\lambda(f(n))=O(x).$$

This is one of the two conjectures of Chowla highlighted by the paper, and no resolution is supplied; it remains open.