Hello. namu0226 I heard you had some inconveniences while taking the lecture. First, I will tell you about the methods we are using to respond to the version. 1. Lecture manual update We are continuously updating related content through the lecture manual. 2. Frequently asked questions We are continuously updating these parts through frequently asked questions. https://bit.ly/3fX6ygx 3. Questions and answers If you post the current situation in detail in the questions and answers, I and the supporters will help you find a solution. In particular, if you are stuck in the part related to the project environment settings, it can be difficult to proceed, so we will definitely solve this part. Nevertheless... In fact, we are responding like this, but in reality, there are many exception cases that occur due to differences not only in the project version but also in each person's OS version, Java version, Windows version, library version, DB version, etc. So, if you organize the parts that you can't solve and post them as questions, we will solve the problem first with those parts, and additionally update the lecture manual and frequently asked questions to help others not have the same problem. If you are stuck and have difficulty proceeding, first try to find a solution through the existing questions, but if you still have difficulty solving it, rather than worrying too much on your own, please use the questions and answers so that we can help you. 🙂 Thank you.