eyed3 “can't concat bytes to str”

from eyed3 import id3 tag=id3.Tag() tag.parse("song.mp3") tag.artist=u"Bilan" print(tag.artist) tag.save() 

Everything works, gives the tag that I assigned, but I can’t save, I write an error - "can't concat bytes to str"

I am sitting on Linux using python3. Also the problem is that there is for example an audio file with tags, but he does not want to read them, he just writes that the tag = None.