Why did the rename command stop working in Ubuntu?

Question

ubuntu

This command worked fine, then all of a sudden it stopped working, I don't understand why :/

[email protected]:~/Folder/FolderName$ rename -v "s/(Ё|ё)/е/g" *
Unknown option: k
Usage: rename [-v] [-n] [-f] perlexpr [filenames]

Answer 1

Are there any files in the folder that start with "-k" ?
If you add -- before *, that isrename -v "s/(Ё|ё)/е/g" -- *