Hello, student, your lecture rating is 1 point ^^ If you are dissatisfied with any part, please tell me specifically to leejinkyu0612@naver.com and I will revise the lecture content. Since this lecture is continuously updated, the lecture will be added or revised based on the feedback. And if you wish, we will also give you a refund! Thank you. (For reference, the library error that occurred when running the existing code in Colab has been reviewed and resolved as of June 30, 2024. Thank you.