Django filebrowser decoding

I got admin panel, where you can see all files and folders added in website folder - userfiles, but there is a problem. When I oppening folder with files whos names contains with UNICODE, that map dosnt open, but I got 500 error, but if there is no files with UNICODE names it works. Example:

django filebrowser decoding

I got django filebrowser for admin, where admin can see all added files in special folder. When admin click on folder to see whats inside, if there is some file with name who contains UNICODE chartacter, then I shows 500 error, but if not, everything is working. We exported this webpage to ne