You can open the web syllabi of Okayama university directly with the class number with this web application. In other words, it simlifies the access to the web syllabi.
https://dongsiku.github.io/openSyllabus/
Type the class number that you want to read the syllabus in the form and press "open the syllabus", then the syllabus page open.
You can also open English syllabi by moving the "English syllabus" page. If you want to move to English syllabus page, press "English syllabus" button on the right upside.
This error means the first and second figures of the class number are incorrect.
All class number have 6 characters. Bet the input number is less than 6 characters.