Why did the shredder overheat at the same time ready?

I was working for hrs, and the shredder overheat twice and I let it rest but then when it is ready to use again, I start shredding papers. While shredding, as I was putting once piece of paper it suddenly "overheats" at the same time it indicates "ready"

(The shredder wont shred paper even if you put anything above it when it is in overheat mode, and it will only indicate "ready" once it cool down or free to use)

I am confuse as to why it happened, and after that the shredder wont on anymore with a half shred paper intact.

Can anyone tell me what to do?

The shredder is intimus 21 CP4

PS. I used the wrong device because I cant see any work office equipment like shredder