What were you doing when the error occurred? Can you reproduce it by following the same steps? Does it occur in every document or just one? What Illustrator version and OS are you using?
I’m sorry you’re experiencing this issue. Could you please share a few more details with us? For example, what operating system and version of Illustrator you’re using? When do you typically encounter this error—is it when you launch Illustrator, open a file, or use a specific tool or feature? Also, did this problem start after a recent update?
We’re here to help, just need a bit more information.