This is the sentence that contains a mistake. In this sentence, the author wrote the word "do" instead of the word "due." The first one is a verb and it refers to taking some action (<em>to do</em> something). "Due to" on the other hand, is an idiom that means "attributable to" or "because of." These words are homophones. Homophones are words that are pronounced the same but have different meanings, and sometimes spelling.
Read the excerpt from "The Crab That Played with the Sea." Now, while the two were talking together, Pau Amma the Crab, who was next in the game, scuttled off sideways and stepped into the sea, saying to himself, 'I will play my play alone in the deep waters, and I will never be obedient to this son of Adam.