The Church doesn’t have a problem with the biological science known as Darwinism i.e evolution by the mechanism of natural selection. The Church does have a problem with Philosophical Materialism (this is a worldview) that is sometimes called Darwinism or is said to be an outgrowth of it.
Bingo. To wit, the great St. Augustine:
On Genesis, Book II "Question of the phase in which the moon was made" 15, 30"God, after all is the author and founder of things in their actual natures. Now whatever any single thing may in some way or other produce and unfold by its natural development through periods of time that are suited to it, it contained it beforehand as something hidden, if not in specific forms and bodily mass, at least by the force and reckoning of nature, unless of course a tree, void of fruit and stripped of its leaves throughout the winter, is then to be called imperfect, or unless again at its origins, when it had still not yet borne any fruit, its nature was also imperfect. It is not only about the tree, but about its seed also that this could not rightly be said; there everything that with the passage of time is somehow or other going to appear is already latent in invisible ways. Although, if God were to make anything imperfect, which he then would himself bring to perfection, what would be reprehensible about such an idea? But you would be quite within your rights to disapprove if what had been begun by him were said to be completed and perfected by another."