The notebooks from Chapter 3 to Chapter 9 of ‘‘ROS Basics in 5 Days’’ is missing.
Well, that’s really strange. Try closing the course and opening it again. I’ve just done some tests here and everything seems to be working OK.
I found that when I switch the language to English, it can display normally, but after switching to simplified Chinese, it displays ‘‘404 not found’’. Is it because there is no Chinese version of these units?