Please check the format of the URL you accessed.
Training Course URL Structure
Training course URLs have the following structure:
https://teachme.jp/XXXX/assignments/AAAA/manuals/YYYY
- Contains "assignments"
- Contains a unique number (AAAA part) that differs for each user to whom the course was distributed
If "assignments" is not included in the URL
This is not a training course URL.
Please check if the relevant course is registered in the course list in My Courses.
If you cannot find the course in the list, please confirm the correct URL with the person who provided it.
Related:
Take a training course (Web Browser)
https://teachme.jp/8/manuals/9315657
What is the manual URL structure and composition?
https://help.teachme.jp/hc/en-us/articles/900006441763
If "assignments" is included in the URL
This might not be the URL of a training course distributed to you.
Even for the same training course, different URLs are issued for each user to whom it was distributed.
Therefore, you cannot open a training course URL that was distributed to another user.
Please check if the relevant course is registered in the course list in My Courses.
If you cannot find the course in the list, please confirm the correct URL with the person who provided it.