What was the specific problem Das Ganu was facing with the Ishavasya Upanishad, and why did he seek out Sai Baba?

Chapter 20 explains that Das Ganu had undertaken the task of creating a commentary on the Ishavasya Upanishad, called the 'Ishavasya-Bhavartha-Bodhini,' in simple Prakrit language for those unfamiliar with Sanskrit. Although he managed a word-for-word translation, he struggled deeply because he could not grasp the internal secret and profound meanings of the scripture. This lack of true understanding caused his mind to find no joy in the work. As a result, a doubt arose, which prompted him to travel to Shirdi to place his problem at the feet of his Satguru, Sai Baba, seeking a resolution.