Why did Das Ganu feel his work on the Upanishad was incomplete, and what did he do about it?

Das Ganu embarked on creating a Prakrit commentary on the Ishavasya Upanishad. However, as Chapter 20 explains, despite translating the text word for word, his 'mind found no joy' because he could not grasp the 'internal secret' and deep meaning. This left him with a significant doubt that marred his sense of accomplishment. The text notes that his desire was fulfilled in creating the commentary, but this one doubt remained unresolved. In an attempt to find a solution, he first consulted with various scholars, leading to great discussion but no satisfactory resolution. Ultimately, this unresolved spiritual question led him to travel to Shirdi to place the problem at the feet of his Satguru, Sai Baba, hoping for a definitive answer.