Is “Historically, Xuanzang had no magical monkey disciple named Sun Wukong.” true?

In Chapter 001 of "Journey to the West", Sun Wukong is depicted as born from a magical stone on Mount Huaguo and causing havoc in Heaven. However, in "The Great Tang Records on the Western Regions" and official histories, Xuanzang's journey to the West was undertaken alone, without such a powerful monkey disciple, which is entirely fictional. Original text: "我原有个法名，叫做孙悟空。" (Chapter 014 of "Journey to the West")