Problem in discover_uri with tone at greek words

[Χρήστος Τριανταφύλλης]

Hello,

i have this line

  info = newitem.discover_uri(("file://" + path).encode('utf-8'))

and with the .encode() it works with everything i enter on path variable
but when
the path variable contains a letter with a tone in greek , for example
"/home/chris/Μουσική"
the tone is the ' above the letter "η" at the end of the string in our
current example, i get this error

  info = newitem.discover_uri(("file://" + path).encode('utf-8'))
  glib.GError: Δεν βρέθηκε ο πόρος.

the "Δεν βρέθηκε ο πόρος." can be translated to "the source hasn't been
found", something like that :P

do you have any idea how to solve this?

thanks in advance!
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