Hi thiet ke vui ve
We are sorry to hear you are unable to open the file. Would you mind telling us the version of Illustrator installed on your machine, and also sharing the details of your operating system?
Have you recently started experiencing this issue? You may try signing out of the Creative Cloud Desktop app, restarting the machine, signing back into Creative Cloud Desktop, and launching Illustrator.
Let us know if that helps. We would be happy to assist you further.
Thanks,
Harshika