It is good to learn because it focuses on the low-level language of TensorFlow as well as the high-level language like Keras. In other places, it was difficult to study 2.x because Session and Placeholder, which are based on TensorFlow 1.x, were used, but it was good because there was no such problem. In the case of Section 1. TOPIC5 Model Implementation, I don't know if it's my mistake, but nothing is displayed in Inflearn. Please fix this error.