Why doesn't the book mention my guru, Paramhansa Yogananda? Is it an incomplete text?

The Satcharitra's primary focus is on the life and teachings of Sai Baba, and the specific guru you are asking about is not mentioned in these excerpts from the text. Chapter 50 explains that Hemadpant is merely a nominal cause for the book's creation and that Sai himself is the one who makes the words speak. The chapter presents a prayer for devotion, stating a preference for steady devotion to Sai over other attainments like the four types of liberation. It suggests that the awakening of devotion to the Saint purifies the heart, which is the book's main purpose rather than being a comprehensive record of all saints.