Hello Steve, First of all, I apologize for the inconvenience you experienced while taking the course. Due to recent policy changes on the Inflearn platform, I had to urgently remove the NotebookLM videos and transition to a text-only format. In that process, I failed to provide proper guidance to students, including yourself. It is entirely my fault that I switched to text-based lectures without posting a notice for students. I sincerely apologize for this. However, I do not plan to continue the course in a text-only format indefinitely. I also felt uneasy about leaving the NotebookLM videos up, so I am planning a course renewal. Although progress has been slow due to my primary job, I intend to update the course within the first half of this year with content reflecting the changed AI ecosystem, along with videos I will produce myself. You can find more details in the news update I published. -> https://www.inflearn.com/course/feel-the-agi-llm%EA%B3%BC-ai/news/1794228?cid=338098 If you find it difficult to continue with the remaining content or the parts you have already completed because the NotebookLM videos were removed, I will assist you with a refund. Once again, I apologize for the inconvenience. - Sincerely, Knowledge Sharer Feel The AGI