What was the specific project Das Ganu was working on, and what difficulty did he face that led him to seek Sai Baba's help in Chapter 20?

According to Chapter 20, Das Ganu was engaged in a significant literary and spiritual project: creating the 'Ishavasya-Bhavartha-Bodhini.' This was intended to be a commentary explaining the meaning of the Ishavasya Upanishad in simple Prakrit language for people who were not familiar with Sanskrit. Despite translating the scripture word for word, Das Ganu found himself unable to grasp its deep, internal secret. His mind found no joy in the work because he couldn't comprehend its true essence. This profound doubt and intellectual block prompted him to travel to Shirdi to place his problem at the feet of his Satguru, Sai Baba.